SWRHL-59r FINAL REPORT OF OFF-SITE SURVEILLANCE FOR THE PIN STRIPE EVENT, APRIL 25, 1966 by Environmental Surveillance Western Environmental Research Laboratory ENVIRONMENTAL PROTECTION AGENCY Published February 1972 This surveillance performed under a Memorandum of Understanding (No. SF 54 373) for the U.S. ATOMIC ENERGY COMMISSION ------- This report was prepared as an account of work sponsored by the United States Government. Neither the United States nor the United States Atomic Energy Commission, nor any of their employees, nor any of their contractors, subcon- tractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness or usefulness of any infor- mation, apparatus, product or process disclosed, or repre- sents that its use would not infringe privately-owned rights. Available from the National Technical Information Service, U. S. Department of Commerce, Springfield, Va. 22151 ft* * Price: Paper copy $3.00; microfiche $.95. ------- SWRHL-59r FINAL REPORT OF OFF-SITE SURVEILLANCE FOR THE PIN STRIPE EVENT, APRIL 25, 1966 by Environmental Surveillance Western Environmental Research Laboratory* ENVIRONMENTAL PROTECTION AGENCY Published February 1972 *Note: At the time this work was performed the Laboratory was named the Southwestern Radiological Health Laboratory, and-was part of the U. S. Department of Health, Education, and Welfare, Public Health Service, Environmental Control Administration, Bureau of Radiological Health. This surveillance performed under a Memorandum of Understanding (No. SF 54 373) for the U.S. ATOMIC ENERGY COMMISSION ------- ACKNOWLEDGMENTS Grateful appreciation is extended to the State Health Departments of California, Colorado, Idaho, and Utah for their assistance and cooperation, which was essential to the completion of the Surveillance Project. ' Special appreciation is extended to the many off-site residents for their invaluable contribution of time in providing milk, water, and vegetation samples, and to those who agreed to participate in the in vivo thyroid analysis. la ------- ABSTRACT The Public Health Service provided off-site surveillance in support of the Pin Stripe Event conducted on April 25, 1966, at the Nevada Test Site. This support consisted of tracking the effluent, monitor- ing radiation dosage to the off-site population, collecting and analyzing environmental samples of air, milk, water and vegetation, and conducting an intensive public relations program for the off-site residents. The maximum net gamma exposure rate measured by a portable survey instrument was 8 mR/hr. This reading was taken along a gravel road used only occasionally and well away from any con- tinuously occupied area. The highest net gamma exposure rate measured at a continuously occupied location was 1. 5 mR/hr. The above exposure rates were taken during cloud passage. The maximum gross beta concentration found on an air filter from a continuously populated area was 25, 000 pCi/m . This filter 131 3 showed a I concentration of 5300 pCi/m . The highest concen- tration of I in a domestic water supply was 3860 pCi/1 and the highest concentration of I in a single milk sample was 4800 pCi/1. This concentration (4800 pCi/1) appeared three days after the event and was not representative of the levels of I actually consumed by any off-site resident. Dilution of milk from this dairy with milk from dairies outside of the contaminated area, lowered the level of I to a maximum of 100 pCi/1. ------- Off-site residents in the affected area, who volunteered, were counted for thyroid burdens in a mobile thyroid counting trailer. The highest total integrated dose was less than 300 mrad. All levels of environmental radiation contamination were below presently accepted safety criteria as established by the U. S. Atomic Energy Commission Standards for Radiation Protection, chapter 0524, dated 8/12/63. 11 ------- TABLE OF CONTENTS ACKNOWLEDGMENTS ia ABSTRACT i TABLE OF CONTENTS iii LIST OF TABLES v LIST OF FIGURES vi INTRODUCTION 1 I. OPERATIONAL PROCEDURES 2 A. External Exposure Measurements 2 1. Ground Monitoring 2 2. Aerial Cloud Tracking 2 3. Exposure Rate Recorders 3 4. Film Badges and Dosimetry 3 B. Environmental Sampling 5 1. Air Samples 5 2. Milk Samples 8 3. Water Samples 9 4. Vegetation Samples 9 5. In Vivo Thyroid Investigation 10 II. ANALYTICAL PROCEDURES A. Air Samples 11 B. Milk and Water Samples 12 C. Vegetation Samples 12 D. Sensitivity 12 III. RESULTS 14 A. Exposure Rate Measurements 14 1. Aerial Monitoring 14 2. Ground Monitoring 15 3. Exposure Rate Recorders 16 4. Film Badges 16 111 ------- TABLE OF CONTENTS (cont'd) III. RESULTS(continued) B. Environmental Sampling 17 1. Air Sampling 17 2. Water Sampling 19 3. Vegetation Samples 22 4. Milk Samples 22 5. Feed Substitution Study 24 6. Thyroid Analysis 31 IV. CONCLUSIONS 33 A. External Exposures 33 B. Internal Exposures 33 C. Health Implications 34 APPENDICES DISTRIBUTION IV ------- LIST OF TABLES Table 1. Threshold detectability at time of count of several radionuclides in various samples, pCi. 13 Table 2. Upper air data from Yucca Lake on April 25, 1966. 14 Table 3. Selected ground monitoring results in off-site populated areas April 25, 1966, at 3 feet above ground level. 16 Table 4. Estimated infinite gamma exposure at two popu- lated locations. 16 Table 5. Exposure rates occurring off the test range complex on April 25, 1966, as measured by RM-11 recorders. 16 Table 6. Domestic water supply samples containing IpCi/1. 19 131 Table 7. Air sampling stations with concentrations of I in excess of 50 pCi/m^ on prefilters. 20 131 Table 8. Milk samples containing maximum levels of I from each location that showed fresh fission products. 27 Table 9. Number of people within a given range of computed thyroid dose. 32 ------- LIST OF FIGURES Figure 1. RM-11 Exposure rate recorder stations. 4 Figure 2. Portable air samplers operating in Nevada during the Pin Stripe Event. 6 Figure 3. Air sampling stations operating during the Pin Stripe Event. 7 Figure 4. Air sampling stations showing detectable amounts of radioiodines. 18 Figure 5. Areas where one or more water samples was collected. 21 Figure 6. Vegetation sampling along roads. 23 Figure 7. Milk sampling locations in Nevada. 25 Figure 8. Milk sampling locations other than in Nevada. 26 Figure 9. I concentration in milk from two cows on pasture in Alamo, Nevada. 29 Figure 10. Comparison of I concentration in milk from the same dairy after substitution of dry hay for green chop. 30 VI ------- INTRODUCTION The Pin Stripe Event was an underground nuclear experiment con- ducted as part of the Department of Defense Weapons Testing Program. Pin Stripe was detonated at 1138 PDT, (1838 GMT) on April 25, 1966, in Area 11, at the Atomic Energy Commission's Nevada Test Site. Radioactive effluent was accidently released. A cloud rose to about 5500 feet within 9 minutes after H-hour, and by H + one hour, the cloud had risen to about 10, 500 feet mean sea level. Southwesterly winds carried the released material northeasterly into the off-site area. Seepage of gaseous fission products con- tinued for several days following this event. Wind direction shifted approximately 180 by April 27 and small amounts (less than 10 pCi/m ) of fresh fission products were found on prefilters as far south as Indio, California. By May 4 all air sampling media were at background levels. The subject of this report is the off-site surveillance provided by the Public Health Service (PHS) for the U. S. Atomic Energy Commission (AEC) in support of the Pin Stripe Event. Under a Memorandum of Understanding with the AEC, the PHS conducts a program of radiological monitoring and environmental sampling in the off-site area surrounding the Nevada Test Site and the Nellis Air Force Range. The overall complex of the Nevada Test Site and the Nellis Air Force Range includes the Nuclear Rocket Devel- opment Station and the Tonopah Test Range and for simplicity will be called the test range complex throughout this report. ------- I. OPERATIONAL PROCEDURES A. External Exposure Measurements 1. Ground Monitoring Ground monitors tracked the effluent cloud with portable radiation detection instruments. Each monitor was equipped with the fol- lowing instruments: Eberline E-500B, Precision Model 111 Standard "Scintillator", and Victoreen Radector Model No. AGB-50-B-SR. The Eberline E-500B has a range of 0 to 200 milliroentgens per hour (mR/hr) beta and/or gamma over four scales with an external halogen filled G. M. tube detector and a 0 to 2000 mR/hr gamma only range from an internal Anton 302 tube detector. The Precision Model 111 Standard "Scintillator" is used primarily for low level gamma detection and provides for a range of 0 to 5 mR/hr over six linear scales. The Radector has a range of 0. 05 to 50, 000 mR/hr over two loga- rithmic scales. This instrument uses an inert gas ionization chamber as the detector. The above instruments are accurate to within +^20 percent as 137 calibrated with Cs and can be read to two significant figures. 2. Aerial Cloud Tracking A U. S. Air Force U-3A aircraft, manned by two PHS monitors equipped with portable instruments identical to those of the ground monitors, tracked the effluent cloud to assist in positioning ------- ground monitors. In addition to the instruments already described, the aerial monitors used a Victoreen Radector, Model II, (0. 1 to 1, 000, 000 mR/hr range) and were also evaluating a Baird Atomic Gamma Scintillation Rate Meter Type NE-148A with a 0 - 3 mR/hr range in three linear scales. Two PHS C-45 aircraft containing various sampling and measurement equipment were also used as aids in cloud tracking. However, their primary purpose was cloud sampling and measurements to determine cloud size and con- tent. The results of this surveillance are the subject of a separate report. 3. Exposure Rate Recorders Eberline Model RM-11 exposure rate recorders were located at 23 stations around the test range complex. (See Figure 1). These recorders use a Geiger tube detector with a range of 0. 01 to 100 mR/hr. Exposure rate is recorded on a 4-cycle log scale strip chart with a capacity of 30 hours continuous recording. These re- corders are accurate to within +20 percent calibrated with a Cs source. 4. Film Badges and Dosimetry The PHS routinely maintains 65 film badge stations containing 5 film badges each off the test range complex and assigns one film badge to each of approximately 120 off-site residents. The badge uses Du Pont type 555 film. This film is accurate to + 50 percent in the 30 to 100 mR range and Hh 10 percent in the 100 to 2000 mR range. The lower limit of detection is 30 mR. The PHS also maintains 21 stations which are equipped with three Edgerton, Germeshausen and Grier Model TL-12 thermolumin- escent dosimeters (TLD). The detection range of this device is 5 mR to 5000 R with reading accuracy at ;+10 percent and with a standard deviation at the 98 percent confidence level of 2.83%. ------- A Operating station • Operating but no chart received Malfunctioned Figure 1. RM-11 Exposure rate recorder stations. 4 ------- B. Environmental Sampling 1. Air Samples On the day of the test, the AEC-PHS Air Surveillance Network (ASN) consisted of 104 Gelman "Tempest" air samplers. These samplers operate continuously at off-site locations with one or more samplers located in each state west of the Mississippi River except Montana and North Dakota. The network was supplemented by six standby stations located in the states of Colorado, Idaho, Utah and Wyoming. Standby stations are operated only when the station operator is notified by the Southwestern Radiological Health Laboratory(SWRHL) to begin sampling. There were also five portable air samplers placed downwind. The "Tempest" air sampler used by the SWRHL uses a Cast Model 1550 vacuum pump driven by an electric motor. The pump has a flow rate of approximately lOcfm. The sampler is designed to use a 4-inch diameter filter paper (prefilter) and a Mine Safety Appliance Co. (MSA) charcoal cartridge. The ASN uses Whatman 541 filter paper for routine air sampling. The total volume of air sampled is calculated from an average vacu- um reading (which in turn indicates the average flow rate) and the total time of sampling. Air sampling stations operating during Pin Stripe surveillance activities are shown in Figures 2 and 3. In addition to the "Tempest" samplers, each mobile monitoring team was equipped with portable gasoline generator powered air samplers using the same filters as the "Tempest". The air mover in this system is a Cast Model 7040 positive displacement pressure-vacuum pump coupled to a Rock- well Model 415 gas meter for measurement of air flow. The flow rate of this system averages 6 cfm. ------- Portable air sampler / charcoal cartridge Figure 2. Portable air samplers operating in Nevada-during the Pin Stripe Event. ------- \ AS J ST.UOO. v L, ! I I V-~MESQUIT1 ..T^OPWE^S^ \ ./ AIR SURVEILLANCE NETWORK STATIONS Environmental Surveillance Program Figure 3. Air sampling stations operating during the Pin Stripe Event. ------- 2. Milk Samples The SWRHL. milk sampling program consists of a routine milk sampling network, a standby milk sampling network, and special sampling in the event of a release of airborne radioactivity from nuclear testing activities. From 20 to 30 producing dairy farms and individual family cows in Nevada, western Utah, and eastern California, are routinely sampled each month. The number sampled varies because of the availability of fresh cows on ranches producing milk for their own use. Normally these samples are collected by personnel from the laboratory. Approximately 155 producing dairies in 11 western states are provided mail-in milk sample containers; pre-labeled, franked, and with appropriate instructions. Any or all of these sampling locations can be activated by telephone through the regional offices of the Public Health Service. The regional office contacts the appropriate state milk control agency which in turn contacts the local milk control agency or the producer. A follow-up telegram is sent to the regional Public Health Service office. This pro- cedure requires from one to four days before the first sample is collected, depending upon the organizational structure of the state milk control agencies. The SWRHL also conducts a continuous survey, of off-site milk sampling locations. Possible sources for milk sampling are indexed and located on milk sampling maps. In the event of a release of radioactive effluent, monitors are able to begin sampling an area immediately. ------- 3. Water Samples Approximately 80 water samples are routinely collected each month from wells, streams, ponds, lakes and urban water systems. After a contaminating event, sampling is expanded to include all domestic and livestock water sources in the affected area. Water samples are collected at all locations where milk samples are collected, -with the exception of the standby milk sampling net- work. Precipitation samples are collected when possible. 4. Vegetation Samples Vegetation samples are collected only after a known release of radioactive effluent. These samples are collected to delineate deposition pattern, to determine where milk samples should be obtained, and to estimate radioisotope concentrations in milk. In addition to the wild plants (such as creosote bush), pasture and dry feed samples are collected when available. Because of the highly variable collection ability of various plants, the impossibility of establishing completely consistent collection and counting techniques, and the highly complex role of micro- meteorology in ground deposition, it is not practical to use vegetation results to assess human exposures. Vegetation sampling results are, therefore, reported as fresh fission pro- ducts detectable or not detectable. At the time of the event, dairy cattle in the fallout sectors were being fed stored feed, hay, green chop and some cows were on pasture. Samples of the feed which were representative of the cows' feed at different locations were collected. ------- 5. In Vivo Thyroid Investigation Seventy-eight off-site residents were counted for specific gamma emitting isotopes in a mobile thyroid counting trailer following this event. 10 ------- II. ANALYTICAL PROCEDURES A. Air Samples All air samples are returned to the SWRHL in Las Vegas for analy- sis. Filters are counted for gross beta activity in a Beckman "Wide Beta" low background (6 i 1 cpm beta) proportional system which has an efficiency of 45% for 0. 54 MeV betas. If significant activity (lOpCi/m ) is detected on the initial count, a minimum of two additional counts are made in the first 48 hours following collection. All other filters are recounted at five and twelve days after collection. Computation of activity is based on establishing a decay constant for each sample and this constant is used to extrapolate the activity to the end of the collection period. The decay equation used is A/AQ= e Gamma emitting isotopes on filter papers and charcoal cartridges are identified and quantitated by placing them directly on a 4- by 4-inch Nal(Tl) crystal coupled to a TMC Model 404-C gamma pulse height analyzer calibrated for energies of 0-2 MeV. Quantities deter- mined are extrapolated to the end of the collection period using the individual decay constants. Average concentration of activity during cloud passage cannot always be calculated since it is not possible to define the duration of cloud passage at all locations. However, the integrated air 3 concentrations, expressed as pCi-hr/m , may be directly com- pared for the various stations, in addition to serving as a measure of the potential inhalation exposure. 11 ------- B. Milk and Water Samples Milk and water samples are collected in one-gallon quantities. These samples are emptied into 3. 5-liter Marinelli beakers and are counted on 4-by 4-inch crystals for gamma analysis. If, for any reason, a full 3. 5-liter sample cannot be obtained, the sample volume is increased to 3. 5 liters by the addition of distilled water to maintain a uniform counting geometry, and appropriate adjustments are made to calculate the activity concentration in the original sample. When this is done, the threshold detectabilities given in Table 1 are proportionately increased. In addition to gamma spectrometry, most milk samples containing radioiodine are analyzed by radio- 89-90 chemistry for Sr after gamma analysis. C. Vegetation Samples Upon arrival in the laboratory, vegetation samples are placed in clean plastic bags and are given an immediate count on a 4- by 4-inch Nal(Tl) crystal, connected to a sealer-timer, for gross gamma activity to determine which samples and, therefore, which locations may have been contaminated. The samples are then analyzed by gamma spectroscopy on the same systems as the other sample types. D. Sensitivity Statistical evaluation of gamma spectral analyses is difficult and open to discussion. However, on the basis of experience •with various types of samples, empirical values have been determined as the approximate threshold detectabilities for various isotopes on the sample types usually collected. These are listed in Table 1 and necessarily include the following assumptions: 12 ------- a. Count time in days after formation as indicated by footnotes. b. Prefilters collect unfractionated fission products resulting in a complex spectrum. c. MSA charcoal collects gaseous fission products only (primarily iodines). d. An eight isotope matrix is employed for computation and isotopes other than those examined are present in amounts which are small relative to those eight. e. Natural activity on air samples is approximately five times system background. Table 1. Threshold detectability at time of count of several radio- nuclides in various samples, pCi. Sample type Filter Charcoal Cartridge Water (pCi/1) Milk (pCi/1) Notes 1 2 1 2 3 4 131i 500 200 200 100 20 20 132Te-I 133! U5I '37Cs 1000 500 1000 200 400 200 100 40-50 20-3040-50 20-30 10 140 Ba-La 500 200 400 20 20 Length of count 10 min. 10 min. 10 min. 10 min. 40 min. 40 min. 1 - Counted at less than 3 days after formation 2 - Counted at 3 days or more after formation 3 - With 137Cs = 10° Pci 4 - Assuming insignificant amounts of other nuclides, and all given isotopes less than 10 times the detection limit. 13 ------- III. RESULTS The Pin Stripe venting resulted in gaseous and particulate con- tamination in the off-site populated areas. Ground monitors were positioned according to data obtained from aerial and on-site monitoring and U. S. Weather Bureau predic- tions (ESSA-ARL). Wind speeds and directions for five periods before and after detonation are shown in Table 2. Table 2. Upper air data from Yucca Lake on April 25, 1966. Height (Ft. MSL) Surface 1 1 5, 6, 7, 9, 0, 1, 12, 13, 14, 000 000 000 000 000 000 000 000 000 Wind direction 0600 Calm 230/04 250/12 240/09 250/11 250/07 230/02 210/02 190/02 240/06 & speed (Deg/Kts) at times indie ated(hrs/PDT) 1142 170/ 220/ 230/ 230/ 12 10 13 10 220/07 220/ 05 220/06 210/ 08 210/08 270/ 10 1400 230/ 220/ 220/ 220/ 210/ 190/ 190/ 220/ 13 06 10 13 10 12 14 10 220/08 270/ 08 1525 220/ 220/ 220/ 12 12 10 230/08 230/ 240/ 230/ 240/ 250/ 270/ 10 12 13 13 13 14 1600 ISO/ 200/ 210/ 220/ 230/ 10 10 12 11 11 230/06 240/07 260/ 250/ 280/ 12 11 13 A. Exposure Rate Measurements 1. Aerial Monitoring The cloud tracking mission of the U. S. Air Force U-3A aircraft lasted from 1135 to 1642 hours, PDT. Since the measurements 14 ------- taken by this aircraft serve only to augment the effectiveness of the surveillance program (particularly the positioning of ground monitors), and do not represent exposures to people on the ground, they are not presented in this report. 2. Ground Monitoring Pin Stripe effluent was first detected off-site, northeast of Groom Lake at 1355 hours and arrived at Highway 25, 6. 5 miles W of Hancock Summit at 1435. By 1630 hours, gamma exposure rates above background were detected from Coyote Summit to Alamo, Nevada, along Highways 25 and 93. Cloud arrival at various locations indicated the cloud was moving at about 15-17 miles per hour. The furthest north that effluent was detected by a ground monitor was at Pioche, 112 miles northeast of ground zero. The cloud reached this location at about 1800 hours. Exposure rates along Highway 25 ranged from 0. 07 to 6. 0 mR/hr with the majority of the readings around 1. 0 mR/hr. The maximum exposure rate measured (at 3 feet above ground level) in the off-site area was 8 mR/hr, net gamma, between 1402 and 1405 hours, PDT, 18 miles NE of Groom Lake. This location is along a gravel road used only occasionally by vehicles. The maximum reading at a continuously populated area was 1. 5 mR/hr at Hiko at 1600, PDT. Selected monitoring data are presented in Table 3. Estimated infinite whole body gamma exposures derived from ground monitoring data at two locations are shown in Table 4. These estimated infinite exposures are based on monitoring readings obtained after cloud passage and not on the peak readings obtained during cloud passage. 15 ------- Table 3. Selected ground monitoring results in off-site populated areas April 25, 1966, at 3 feet above ground level.* Location Alamo Ash Springs Caliente Hiko Pioche Time of peak Y exposure rate PDT 1555-1600 1610 1814 1600 1840-1856 Net peak Y ex- posure rate mR/hr* 0.23 0.9 0.02 1.5 0.05 *E-500B portable survey instrument. Table 4. Estimated infinite gamma exposure at two populated locations. Location Hiko, Nevada Alamo, Nevada Net V at 24 hrs 0. 1 0. 04 Infinite exposure 12 mR 5 mR 3. Exposure Rate Recorders RM-11 recorder charts collected after the Pin Stripe Event showed exposure rates above background at Alamo, Caliente and Pioche. Results are shown in Table 5. Table 5. Exposure rates occurring off the test range complex on April 25, 1966, as measured by RM-11 recorders. Location Alamo Caliente Pioche Time of peak exposure rate (PST) 4/25 4/25 4/25 1600 1755-1805 1845 Time exposure rates Net peak ex- rose above background posure rate mR/hr 4/25, 4/25, 4/25, 4/25, 1510 1740 1925 1750 0. 15 0.01 0.04 4. Film Badges One film badge collected after the Pin Stripe Event showed 16 ------- an exposure at the detection limit. This badge was taken from a film badge station at Hancock Summit, an unpopulated location on Highway 25. This badge showed a total exposure of 30 mR and was exposed from 3/31/66 - 5/10/66. TLD's from Hancock Summit showed no detectable exposures above normal background levels, nor did TLD's from any other location show net exposures above background. No personnel badges showed exposures at or above the detection limit. B. Environmental Sampling 1. Air Sampling Nineteen permanent air sampling stations and five temporary- portable stations in the off-site area showed detectable amounts of fresh fission products (primarily radioiodines) on prefilters, cartridges, or both. These stations are shown in Figure 4. The area in which fresh fission products were found by air sampling, extended to Indio, California, on the south; Ridgecrest, California, on the west; Salt Lake City, Utah, to the northeast; and Denver, Colorado,to the east. Wind direction on the day of the event was from the southwest, therefore the highest concentrations were found to the northeast of surface ground zero. Comparison of radioiodine concentration on pre- filters and charcoal cartridges suggests that the radioiodines were mostly particulate. This assumption is strengthened by the fact • that considerable visible material was ejected at the time of the detonation. Wind direction changed approximately 180 late on April 26 or early on April 27. Seepage of gaseous material from surface zero con- tinued for several days. This material was carried to the south 17 ------- Air sampling stations showing detectable amounts of radioiodines NOT SHOWN : DENVER. COLORADO, DURANGO, COLORADO. INDIO. CALIFORNIA Figure 4. 18 ------- and was detected by air samplers as far south as Indio, California. 3 131 A small amount (0. 5 pCi/m ) of I was detected on a charcoal cartridge exposed at Alamo, Nevada,as late as May 3. Examination of air filters was limited to gamma pulse height analysis and gross beta counting. It is not possible, therefore, to definitely determine whether such a small amount of radioiodine was gaseous material from continuing seepage or resuspension of particulate material deposited earlier. By May 4 no stations showed detectable amounts of fresh fission products. Table 7 lists eight stations where concentrations of I were in excess of 50 pCi/m . All other stations, where gamma pulse O 1 o 1 height analysis was performed on filters, were below 10 pCi/m I. All stations showing detectable amounts of I are listed in Appendix I. 2. Water Sampling A total of 187 water samples was collected by the off-site sur- veillance program for Pin Stripe. Sampling locations are shown in Figure 5, and all water sampling results are listed in Ap- pendix II. Four samples from one domestic tap showed measureable concentrations of I. These are shown in Table 6. These COncen- 131 trations of I at the Davis Ranch were due to the completely open supply from which the domestic water was taken. 131 Table 6. Domestic water supply samples containing I pCi/1. Location Hiko, Nevada Davis Ranch Davis Ranch Davis Ranch Datp Col- Source lected 4/26 Open tank 4/27 4/28 4/30 ...'!....". Gross Beta* 151 35 19 8 Gross Alpha 1.4 0.1 2.5 .3.3 131 132 133 135 3860 80 270 50 30 60 30 - : 40. ^Activity other than iodine. 19 ------- Table 7. Air sampling stations with concentrations of I in excess of 50 pCi/m on prefilters. COLLECTION Sampling Period Tot&1 Vol_ Location April 1966 Start Stop HrS' "™f Day Hr Day Hr (m ' 6. 5 mi W of 25 1413 25 1700 3.1 26 Hancock Summit 18 mi NE of 25 140025 1535 1.6 32 Groom Lake Hancock Summit 25 1435 25 1745 3.1 32 N Ash Springs, 25 143025 1755 3.3 35 0 Nevada Hiko- 25 1430 25 1810 3.8 35 Crystal Springs Hiko, Nevada 25 0810 25 1800 10.9 226 Pioche, Nevada 25 1525 25 1925 3.9 .81 Alamo, Nevada 25 0730 26 0725 23.8 407 ISOTOPIC ANALYSIS Col- lector P C P C P C P C P C P C P C P C Gross Beta I _.. 3 pCi-Hr _. . 3 pCi-Hr pCi/m pCi/m m m 50,000 160,000 3,500 150 45,000 72,000 5,100 290 34,000 110,000 2,600 170 25,000 83,000 5,300 130 21,000 80,000 1,600 400 3,500 38,000 510 39 2,200 9,000 1,100 53 710 17,000 57 19 11,000 470 8,200 460 8, 100 530 17,000 430 6.100 1,500 5,600 430 4,300 210 1,400 450 132I pCi/m3 12, 1, 38, 2, 8, 1, 18, 6, 1, 1. 000 200 000 600 900 500 000 950 800 200 900 330 ZOO 40 140 86 pCi-Hr 3 m 37,000 3,700 61,000 4,200 28,000 4,600 59 ,000 3.100 26,000 4,600 21,000 3,600 800 160 3,300 2,000 133I pCi/m3 4, 100 500 12,000 !8'80 3, 000 660 5,600 290 1,900 800 •650 :150 3:50 250 110 75 pCi-Hr 3 m 13,000 1,600 19,000 i , 400 9,300 2,000 18,000 960 7,200 3,000 7, 100 1,600 1,400 970 2,600 1,800 135I pCi/m 19 7 78 16 17 10 32 6 10 7 3 1 ,000 ,800 ,000 ,000 ,000 ,000 ,000 ,300 ,000 ,000 ,600 ,700 ND 600 220 100 pCi-Hr 3 m 59,000 24,000 120,000 26,000 53,000 31,000 110,000 21,000 3g, 000 27,000 39,000 19,000 ND 2,300 5,200 2,400 P - Whatman 541 filter(prefilter) C - Mine Safety Appliance Co. Charcoal cartridge Gross beta and radionuclide data extrapolated to end of collection period pCi-Hr was computed using the actual sampling time, which in some cases will differ from the total time between time on and time off, 3 which may be only approximate. ------- Areas where one or more water samples were collected Figure 5. 21 ------- 3. Vegetation Samples Five hundred and seventy-one vegetation samples from 123 locations were collected and analyzed for gamma emitting isotopes. Of these, fresh fission products were found at 95 separate locations. All sampling locations are listed in Appendix III and the general areas sampled are shown on Figure 6. For the reasons stated in Operational Procedures, vegetation samples are shown as fresh fission products detected or not detected. 4. Milk Samples Six hundred and fifty-five milk samples from 80 separate dairies, processing plants, or individual ranches, were collected for the Pin Stripe Event. Six hundred and fifty milk samples were analyzed for gamma emitting isotopes and selected samples were subjected 89 90 to Sr and Sr analysis. Of the 650 samples with complete gam- ma information, 187 contained detectable amounts of I. The maximum concentration of I was found in a sample from the Schofield Dairy at Hiko, Nevada. This sample had a concentration of 4800 pCi/1 and was collected April 27, 1966. Four other locations had peak I concentrations above 1000 pCi/1. These were the L. Lee Dairy at Alamo, Nevada, (1400 pCi/1); the Sharp Ranch at Alamo (2100 pCi/1); the Davis Ranch at Hiko (3500 pCi/1); and the Donahue Ranch at Ursine, Nevada, (1100 pCi/1). By the second day after the event, several factors had modified the normal disposition of milk from the five locations mentioned above. All the milk being produced by family cows at the Davis, Donahue, and Sharp Ranches was taken for sampling purposes. Uncontaminated milk and dairy products were substituted in lieu of cash payments. At the Schofield Dairy at Hiko, stored hay from Utah was purchased by the Government and substituted for the green chop being fed at that time. The feed 22 ------- / PIOCHE HIKO ' If CALIENTE "8 Vegetation with fresh fission products detected Vegetation with fresh fission products not detected Figure 6. Vegetation sampling along roads. 23 ------- substitution program is the subject of another report, "Preventive Action Taken at Schofield's Dairy, Hiko, Nevada, Following an Accidental Release of Radioactivity from the Nevada Test Site, " - SWRHL-56r. ^ Milk from the L. Lee Dairy and the Schofield Dairy was diluted with uncontaminated milk from dairies outside the affected areas. Sampling of milk from the tank truck at the processing plant showed a maximum of 100 pCi/1 I. Milk collected at the retail outlets from this processing plant showed no detectable radioiodines. Milk sampling locations are shown in Figures 7 and 8. Table 8 lists milk samples with the highest I con- centrations from each location sampled. Appendix IV lists the results of all milk samples collected for this event. Figure 9 shows I concentration versus time at the Sharp Ranch in Alamo, Nevada. 5. Feed Substitution Study The decision to substitute dry hay was prompted by vegetation sampling of green alfalfa feed from the Schofield Dairy. By 0300 on the morning of April 26, results from gamma analysis of these samples indicated the possibility of I levels in milk reaching 4 5x10 pCi/1. PHS and AEC officials decided to substitute dry hay to keep radioiodine levels as low as possible, and to provide experi- mental information under actual field conditions for future planning purposes. Four cows from the Schofield Dairy herd were rented by the SWRHL. and continued on the fresh alfalfa. All the milk from these four cows was withheld from consumption. Figure 10 compares the milk from these four cows, and the milk 131 from the remainder of the herd. Measured levels of I peaked out at less then 1/10 predicted levels. The reasons for this disparity are not completely understood. Analysis of milk samples from other dairies or ranches in the area showed I 24 ------- Milk sampling locations (number shows separate locations in area) Figure 7. 25 ------- MOUNTAI/J HOME BUHL IDAHO FALLS • I •BLACKFOOT • JEROME »POCATELLO JUHL 0 ^BURLEY I T 1 • SMITHFIELD OGDEN« I • SALT LAKE CITY •SPANISH FORK • Mt. PLEASANT 'GARRISON MINERSVILLE* « BEAVER •CEDAR CITY (2) MOCCASIN* •FREDONIA • Mt. TRUMBULL • BARSTOW NEWHALL LOS ANGELES • RIVERSIDE • ESCONDIDO • •BRAWLEY RIVERTON •CASPER • RAWLINS CHEYENNE* • CRAIG • Ft. COLLINS • BRUSH • GLENWOOD SPRINGS I • GRAND JUNCTION DELTA • COLORADO SPRJNGS • CANON CITY I • ROCKY FORD • MONTE VISTA DURANGO • ALAMOSA 5TA I '+ TRINIDAD [ Figure 8. Milk sampling locations other than in Nevada. 26 ------- Table 8. Milk samples containing highest levels of showed fresh fission products. 131 I from each location that Collection Data Location Alamo, Nevada Wright Dairy Leo Stewart Dairy M. K. Stewart Dairy Sharp Ranch L. Lee Dairy Frehner Dairy Caliente, Nevada Young Ranch Charlton Ranch Raymond Ranch Tennille Ranch Hiko, Nevada Davis Ranch Schofield Dairy Las Vegas, Nevada Anderson Dairy #4 (milk from Alamo) Panaca, Nevada E. Deck Ranch K. Lee Ranch Pioche,' Nevada Del Mue Ranch Ursine, Nevada Donahue Ranch Date of milking 4/26/66 4/27/66 4/28/66 4/28/66 4/28/66 5/09/66 5/10/66 4/27/66 4/28/66 4/30/66 4/28/66 4/30/66 5/01/66 4/27/66 4/27/66 5/16/66 5/19/66 4/27/66 4/30/66 4/27/66 4/28/66 Analytical Data Activity (pCi/1) 131I 50 270 590 2100 1400 60 60 30 30 30 130 100 50 3500 4800 100 100 70 170 30 1100 27 I33i 330 850 770 5100 1800 ND ND 90 70 ND ND 500 ND 7800 12, 000 ND ND 220 60 ND 1200 137_ Cs 45 45 ND ND ND 20 25 30 30 . 15 85 ND 45 ND ND 15 20 60 40 60 45 89C Sr 90 Sr ND* 3 ND ND 5 ND No ND No No ND No ND ND 15 10 ND ND No ND No ND 6 4 3 6 Chemistry 2 Chemistry Chemistry 4 Chemistry 10 3 4 3 5 5 Chemistry 8 Chemistry 15 ------- Table 8. Milk samples containing highest levels of showed fresh fission products, (continued) 131 I from each location that Collection Data Location Fredonia, Arizona Button Ranch Mt. Trumbull, Arizona O. Bundy Ranch Spanish Fork, Utah Town Pride Dairy Idaho Falls, Idaho Wallace Dairy Date of milking 5/02/66 5/02/66 4/28/66 4/29/66 Analytical Data Activity (pCi/1) 131_ 133T 137_ 89C I I Cs Sr 70 ND 45 ND 20 ND 35 ND 60 ND 85 ND 70 ND 30 ND 90 Sr 10 6 10 10 89 133 *ND = Not detected. Minimum detectable levels are: ,,7Sr, 5 pCi/1; I, 20pCi/l; Cs, 10 pCi/1. Note: The strontium results listed are, for the most part, composites of 3 or 4 days samples. Compositing was necessary because of the large number of samples processed following this event. 28 ------- 10,000—1 5,000— MAXIMUM CONCENTRATION FOUND IN ANY SAMPLE FROM EITHER OF THE LOCATIONS 1000- 500- 100 — $0— 1 \ 4—1 12 IS !• 11 M 27 30 Days after detonation i Pin Stripe Event 33 34 3* Figure 9. I concentration in milk from two cows on pasture in Alamo, Nevada. 29 ------- 10.000—i Dry hay from Utah substituted for grean chop 3,000— 1000— 500 Four cows held on green chop Cows put on dry hay 100— \ \ 15 M >S 10 15 40 Days after detonation | Pin Stripe Event Figure 10. Comparison of I concentration in milk from the same dairy after substitution of dry hay for green chop. 30 ------- concentrations well within acceptable limits. A detailed report of the results of this experiment was released by the Bioenvironmental Research Program of the SWRHL, "Dairy Farm Radioiodine Studies Following the Pin Stripe Event of April 25, 1966, " - SWRHL-41r. 6. Thyroid Analysis The Pin Stripe Event provided the first opportunity to use the SWRHL thyroid analysis trailer under actual field conditions. The trailer is a commercially available travel trailer equipped with a 5- by 2-inch Nal crystal detector, multi-channel analyzer, and proper shadow shielding. The trailer, with generator equipped pick-up, is completely self contained and it is possible to determine actual thyroid exposures in the field. Based on information derived from aircraft measurements and reported iodine measurements in some milk samples, the thyroid analysis trailer was moved to the Alamo area. The first measurements were made 50 hours following the venting at a ranch 15 miles north of Alamo; however, high back- grounds and extremely low thyroid burdens necessitated moving the thyroid trailer into the town of Alamo for most of the measurements. Spectra taken at this time were characterized by rather large 132 quantities of I. As an initial, and certainly conservative,esti- mate of the exposure, the Te precursor was assumed to be fixed 132 in the body with the I in equilibrium. Measurements taken several days later demonstrated that this probably was not the 132 132 case. The I peaks were probably due to external Te on the 132 children and small lung burdens of Te. The trailer was taken to Ursine, Nevada,on April 30, 1966, and children representing families from Pioche, Panaca, and Ursine were counted. The highest dose measured at this location was below 50 mrad. 31 ------- All exposures were computed assuming inhalation at the time of cloud passage. The dose conversion factors used were 0. OZ8 mrad/ 133 pCi/gram thyroid for I, and 0. 128 mrad/pCi/gram thyroid for I. Theoretical thyroid weights for children were used to cal- culate the exposures from the burdens measured by the thyroid counter. A summary of all the information obtained is shown in Table 9. The information in the table represents the maximum upper limits of possible thyroid absorbed doses. Table 9. Number of people within a given range of computed thyroid dose. Location Alamo Hiko Ursine Pioche Panaca Back- ground 10 5 4 1 5 BKG-50 mrad 17 19 1 0 0 50-150 mrad 6 8 0 0 0 150-300 mrad 0 2 0 0 0 Total 33 34 5 1 5 Male children - 37 Female children - 33 Female adults - 8 32 , ------- IV. CONCLUSIONS The sampling and analysis of environmental factors following the Pin Stripe Event was extensive and a large effort was made to document the external and internal exposures to ionizing radiation resulting from Pin Stripe. A. External Exposures Whole body gamma exposure resulting from Pin Stripe effluent was determined by portable and fixed radiac instruments. Projection of infinite exposures from survey instrument readings taken on the day following the con- taminating event, indicated a maximum infinite external exposure to any populated area to be 12 mR. Perhaps the most meaningful comparison that might be made of such an ex- posure is to compare it with background radiation expo- sures. Measurement of background exposures by thermoluminescent dosimeters from several locations throughout the state, show a range of approximately 100-200 mR/year. Thus, an infinite exposure dose of 12 mR would add about 10% to normal yearly background radiation. B. Internal Exposures The thyroid analysis trailer provided the PHS with an invaluable tool for evaluating radioiodine thyroid burdens of off-site residents. Due to the relatively low levels of iodine isotopes contained in the thyroids of those people 33 ------- analyzed, the results are given in ranges rather than specific doses for each individual. Two individuals from the Hiko area showed thyroid absorbed doses in the 150-300 mrad range. C. Health Implications Considering the extremely small internal and external doses resulting from the Pin Stripe Event, it is concluded that the exposure to additional ionizing radiation was negligible. 34 ------- APPENDICES Appendix I. Additional Air Sampling Results, April 1966 35 Appendix II. Complete Water Sampling Data 42 Appendix III. Vegetation Sampling Data 50 Appendix IV. Complete Milk Sampling Data 59 ------- Appendix I. Additional Air Sampling Results, April, 1966. GO cn Location Baker, Calif. Death Valley Jet. , Calif. Indio, Calif. Ridgecrest, Calif. Shoshone, Calif. Sampling Start Day Hr 26 27 28 29 26 26 26 27 27 28 28 29 29 30 30 26 •27 28 26 27 28 25 26 27 28 29 1400 1400 1400 1400 0645 0645 0645 0645 0645 0645 0645 0645 0645 0645 0645 1000 1000 1015 1310 1352 1309 1008 1039 1741 1608 1903 Period Stop Day Hr 27 28 29 30 27 27 27 28 28 29 29 30 30 01 01 27 28 29 27 28 29 26 27 28 29 30 1400 1400 1400 1400 0645 0645 0645 0645 0645 0645 0645 0645 0645 0700 0700 1000 1015 1000 1347 1301 1520 1037 1738 1604 1900 1655 Total Time (Hr) 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 24.0 23.9 23.9 24. 3 24. 3 24.0 24. 2 23.7 26.6 23.2 24. 1 24.4 31.2 22.4 26.7 22.0 Collection Sample _ , ,, , Col- Volume , 3, lector (m3) 460 485 472 472 448 448 448 485 485 472 472 483 483 491 491 361 364 357 455 409 474 455 566 441 512 410 P P P P P P C P C P C P C P C P P P P P P P P P P P Beta Activity (pCi/m3) 53. 1. 2. 0. 34. 34. 0. 1. 0. 0. 1. 4. 0. 0. 0. 0. 0. 64 1. 1. 0. 0 2 1 18 0 0 78 3 22 18 1 1 77 12 41 22 01 6 1 70 Results Beta Exposure 131I 132Te-I 133I ' (pCi-hr/m3) pCi/m3 pCi-hr/m3 pCi/m3 pCi-hr/m3 pCi/m3 pCi-hr/m3 pCi/m3 1300 9.3 220 3.7 88 280 6,600 ND 29 NGS* 50 4. 3 820 5.2 120 19 460 ND ND ND 820 5.2 120 19 460 ND ND ND NGS* 19 31 5.2 4. 4 ND ND ND ND ND ND ND NGS* 26 99 0.54 13 ND ND ND ND ND 18 NGS* 3. 2 ND ND ND ND ND ND ND 9.5 0. 28 6. 5 ND ND ND ND ND 5. 3 ND ND ND ND ND ND ND 0. 24 NGS* 2000 9.31 290 29 910 99.3 3,100 ND 36 NGS* 29 15. ND ND ND ND ND ND ND I35j pCi-hr/m3 ND ND ND ND ND ND ND ND ND ND ------- Aooendix I. Additional Air Sampling Results, April, 1966 (continued) co Location Denver. Colo. Durango, Colo. Alamo, Nevada Sampling Start Day Hr 26 26 27 27 25 25 26 26 27 25 25 26 26 27 27 28 28 29 29 30 30 01 01 02 02 03 03 0900 0900 0900 0900 1830 1830 1830 1830 1832 0730 0730 0725 0725 0745 0745 0805 0805 0715 0715 0725 0725 0735 0735 0740 0740 0700 0700 Period Stop Dav Hr 27 27 28 28 26 26 27 27 28 26 26 27 27 28 28 29 29 30 30 01 01 02 02 03 03 04 04 0900 0900 0915 0915 1829 1829 1830 1830 1830 0725 0725 0745 0745 0805 0805 0715 0715 0725 0725 0735 0735 0740 0740 0700 0700 0730 0730 Total Time (Hr) 23. 23. 24. 24. 24. 24. 24. 24. 23. 23. 23. 24. 24. 24. 24. 23. 23. 24. 24. 24. 24. 24. 24. 23. 23. 24. 24. 9 9 2 2 0 0 0 0 9 8 8 3 3 2 2 2 2 1 1 2 2 1 1 2 2 5 5 Collection Sample _ Beta Beta Volume Activity Exposure (m3) lector (pCi/m3) (pCi-hr/m3) 495 495 489 489 485 485 472 472 983 407 407 453 453 464 464 445 445 437 437 476 476 437 437 433 433 482 482 P 1.3 31 C P 0.13 3.1 C P 2.0 48 C P 0.41 9.8 C P 0. 22 5. 2 P 710 17,000 C P 44 1,100 C P 0.53 13 C P 3. 1 72 C P 1.4 34 C P 0.40 9.7 C P 0.31 7.5 C P 0.31 7.1 C P 1.11 27 C 13 PCi/m3 0. 27 ND ND ND 0. 32 0.42 ND ND ND 57 19 2.0 ND ND 0.88 24 0.77 ND 0.53 ND 0.45 ND ND ND ND ND 0.50 'I pCi-hr /m3 6.4 ND ND ND 7.7 10- ND ND ND 1,400 450 49 ND ND 21 560 18 ND 13 ND 11 ND ND ND ND ND 12 Results I32Te-I 133I pCi/m3 pCi-hr/m3 pCi/m3 pCi-hr/m3 pCi/m ND ND ND ND 1.7 ND ND ND ND 140 86 4.2 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 41 ND ND ND ND 3, 300 2,000 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 3.2 ND ND ND ND 110 75 3.6 ND ND 1. 1 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 77 ND ND ND ND 2,600 1,800 87 ND ND 27 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 220 100 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1351 3 pCi-hr/m3 ND ND ND ND ND ND ND ND ND 5,200 2,400 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ------- Appendix I. Additional Air Sampling Results, April, 1966 (continued) co Location Alamo Nevada (continued) Ash Springs, Nevada Caliente, Nevada Currant, Nevada Geyser Maint. Sta. , Nevada Sampling Start Day Hr 04 04 05 05 25 25 25 25 25 25 25 25 26 26 27 28 29 30 25 25 26 26 27 27 25 26 27 0730 0730 0715 0715 1430 1430 1755 1755 0830 1510 1915 1915 0830 0830 0845 0810 0825 0825 0715 0715 0715 0715 0715 0715 1608 1603 1618 Collection Period Total Sample Beta Stop Time Volume Activity Day Hr (Hr) (m3) lector (pCi/m3T 05 05 06 06 25 25 26 26 25 25 26 26 27 27 28 29 30 01 26 26 27 27 28 28 26 27 28 0715 0715 0700 0700 1755 1755 1210 1210 1910 1910 0830 0830 0845 0845 0810 0825 0825 0730 0715 0715 0715 0715 0715 0715 1600 1615 1825 23. 23. 23. 23. 3. 3. 18. 18. 10. 4. 13. 13. 24. 24 23. 24. 24. 23. 24. 24. 24. 24. 24. 24. 24. 23. 26. 8 8 7 7 4 4 3 3 6 0 2 2 2 . 2 2 2 0 0 4 4 5 5 4 4 .6 6 6 420 420 430 430 35 35 187 187 230 92 287 287 526 526 493 514 509 488 543 543 545 545 543 543 459 465 483 P C P C P C P C P C P C P C P P P P P C P C P C P P P 0. 39 0. 13 25,000 98 120 6.8 0.64 0. 14 0.74 0. 36 0. 10 0.06 0. 16 0. 10 5.7 0. 17 0. 16 Beta Ex_posure (pCi-hr/m3) 9.4 3.0 85, 000 1,800 1, 300 90 3. 2 18 8.6 2. 1 1. 3 3.9 2.4 140 4.0 4. 3 Results 131X 132Te-I pCi/m3 pCi-hr/m3 pCi/m3 pCi-hr/m3 pCi/m 5, 300 130 9. 3 9. 1 7. 0 7.6 ND 1. 2 ND ND ND ND ND ND 0.41 ND 0.76 18,000 430 170 170 74 30 ND 16 ND ND ND ND ND ND 10 ND 18,000 950 18 ND 15 ND ND 0.65 ND ND ND ND ND ND ND ND ND NGS* 61,000 5, 3,200 330 ND 160 ND ND 8.6 ND ND ND ND ND NGS* ND ND ND ND 600 290 17 48 17 31 ND 2. 5 ND ND ND ND ND ND ND ND ND 133X 135X 3 pCi-hr/m3 pCi/m3 pCi-hr/m3 19, 000 990 310 880 180 120 ND 33 ND ND ND ND ND ND ND ND ND 32,000 6, 300 32 ND ND ND ND 1.7 ND ND ND ND ND ND ND ND ND 110,000 21,000 590 ND ND ND ND 22 ND ND ND ND ND ND ND ND ND NGS* ND 1. 2 ND ND ND 30 ND ND ND ND ND ND ND ND ND ND ND 4. 0 ND ND ND 98 ND ND ND ND ND ND ND ND ND ND ------- Appendix I. Additional Air Sampling Results, April, 1966 (continued) co 00 Location Groom Lake - 18 mi. NE, Nevada Hancock Summit, Nevada Hancock Summit - 6. 5 mi. W, Nevada Hiko - Crystal Springs, Nevada Sampling Start Day Hr 25 25 25 25 25 25 25 25 25 25 25 25 26 26 27 27 28 28 29 29 30 30 01 01 1400 1400 1435 1435 1413 1413 1430 1430 0810 0810 1800 1800 0950 0950 0800 0800 0800 0800 0805 0805 0805 0805 0805 0805 Period Total Stop Time Day Hr (Hr) 25 25 25 25 25 25 25 25 25 25 26 26 27 27 28 28 29 29 30 30 01 01 02 02 1535 1535 1745 1745 1700 1700 1810 1810 1800 1800 0950 0950 0800 0800 0800 0800 0805 0805 0805 0805 0805 0805 0805 0805 1.6 1.6 3. 1 3. 1 2.8 2.8 3.7 3.7 10.9 10.9 14.0 14.0 22. 1 22. 1 24.0 24. 0 24. 1 24. 1 24.0 24.0 24.0 24.0 24.0 24.0 Collection Sample Beta Beta Volume Activity Exposure (m3) 6C °r (pCi/m3) (pCi-hr/m3) 32 32 32 32 26 26 35 35 226 226 290 290 458 458 497 497 499 499 497 497 497 497 497 497 P 45,000 72,000 C P 34,000 110,000 C P 50,000 140,000 C P 21,000 78,000 C P 3,500 38,000 C P 100 1,400 C P 16 360 C P 0. 58 14 C P 4.7 110 C P 0.60 14 C P 0.54 13 C P 0.24 5.7 C i pCi/m3 5, 100 290 2,600 170 3, 500 150 1,600 400 510 39 9.6 52 3. 1 1.7 ND ND 0.84 0. 71 0. 20 0. 57 ND 0.62 ND ND Results 31I 132Te-I ' pCi-hr/m3 pCi/m3 pCi-hr/m3 pCi/m3 8, 200 460 8, 100 530 9,700 420 5,900 1,500 5,600 435 130 730 69 38 ND ND 20 17 4.8 14 ND 15 ND ND 38,000 2,600 8,900 1,500 12,000 1, 200 6,800 1, 200 1,900 330 22 84 8.8 0.97 ND ND ND ND ND ND ND ND ND ND 61,000 4, 200 28,000 4,600 34, 000 3,400 25,000 4,400 21,000 3, 600 300 1, 200 200 21 ND ND ND ND ND ND ND ND ND ND 12, 000 880 3,000 660 4, 100 500 1,900 800 650 150 16 290 12 7. 1 ND ND ND ND ND ND ND ND ND ND 33I 135I pCi-hr/m3 pCi/m3 pCi-hr/m3 19,000 1,400 9, 300 2,000 11,000 1,400 7, 000 3,000 7, 100 1,600 220 4, 100 270 160 ND ND ND ND ND ND ND ND ND ND 78, 000 16, 000 17, 000 10,000 19,000 7,800 10, 000 7,000 3,600 1,700 27 86 ND ND ND ND ND ND ND ND ND ND ND ND 120, 000 26, 000 53,000 31,000 53, 000 22, 000 37,000 26,000 39,000 19,000 380 1, 200 ND ND ND ND ND ND ND ND ND ND ND ND ------- Appendix I. Additional Air Sampling Results, April, 1966 (continued) Location Lathrop Wells, Nevada Moapa - Warm Springs Ranch, Nevada Pahrump, Nevada Sampling Start Day Hr 25 25 26 26 27 27 28 28 29 29 25 25 26 26 27 27 28 28 29 29 25 26 27 29 30 0635 0635 0635 0635 0625 0625 0545 0545 0605 0605 0800 0800 0800 0800 0830 0830 0800 0800 0800 0800 1200 1200 1200 1200 Collection Period Total Sample Stop Time Volume Day Hr (Hr) (m3) leCt°r 26 26 27 27 28 28 29 29 01 01 26 26 27 27 28 28 29 29 30 30 26 27 29 30 01 0635 0635 0625 0625 0545 0545 0605 0605 0605 0605 0800 0800 0830 0830 0800 0800 0800 0800 0800 0800 1200 1200 1200 1200 23.9 23.9 23.8 23.8 23.3 23.3 24. 2 24. 2 48.0 48.0 23.0 23.0 24. 5 24, 5 23.5 23.5 24.0 24.0 24.0 24.0 23.6 24. 1 48.0 23.7 24. 3 483 483 469 469 471 471 476 476 945 945 476 476 470 470 451 451 497 497 460 460 440 450 846 442 478 P C P C P C P C P C P C P C P C P C P C P P P P P Beta Beta Activity Exposure (pCi/m3) (pCi-hr/m3) 0. 2. 0. 0. 0. 0. 10 2.4 8 67 77 18 91 24 13 3 0.42 10 0. 1. 0. 0. 12. 1. 0. 0. 27 6. 3 1 26 42 10 12 2.8 0 290 4 67 31 7.3 31 7.5 pCi/m3 pCi-hr/m3 ND 0.48 ND ND ND ND 0. 20 ND ND ND ND ND ND ND 1.81 ND ND ND ND 11 ND ND ND ND 4.9 ND ND ND ND ND ND ND 44 ND ND ND Results 132Te-I 133I pCi/m3 pCi-hr/m3 pCi/m3 pCi-hr/m3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND 5. 1 ND ND ND ND NGS* ND NGS* ND NGS* ND ND ND ND ND ND ND ND ND ND ND NGS* 120 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pC i/m3 pCi-hr/m3 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ------- Appendix I. Additional Air Sampling Results, April, 1966 (continued) Sampling Location f & Start Day Hr Pioche, Nevada 25 25 25 25 25 26 27 28 29 Cedar City, Utah 25 25 26 § Garrison, Utah 25 26 Headquarters Desert 25 Experimental Station, ., Utah 27 Provo, Utah 25 26 26 27 27 0800 1525 1525 1925 1925 0800 0800 0800 0800 1225 1225 1225 1225 0800 0800 0815 0833 0815 0852 0855 0855 0900 0900 Period Total Stop Time Day Hr (Hr) 25 25 25 26 26 27 28 29 30 26 26 27 27 26 27 26 27 28 26 27 27 28 28 1520 1928 1928 0800 0800 0800 0800 0800 0800 1225 1225 1445 1445 0800 0800 0830 0814 0808 0855 0900 0900 0900 0900 7.4 3.9 3.9 12.0 12.0 24.0 24.0 24.0 Z4.0 24. 0 24.0 26. 3 26. 3 23.7 24. 0 23.9 23. 3 23.6 24.0 24. 1 24. 1 24.0 24.0 Collection 5*™pl* Col- Volume (m3) LeCt0t 153 81 81 242 242 472 485 497 497 485 485 518 518 503 497 507 459 501 449 437 437 411 411 P P C P C P P P P P C P C P P P P P P P C P C Beta Activity (PCi/m3) 0. 19 2, 200 140 1.8 0. 37 1.0 0.48 1. 5 0. 13 96 0. 33 87 1. 3 0.09 33 0.66 0.09 Beta Exposure (pCi-hr/m3) 1.4 9,000 1,700 43 8.9 24 12 36 3.4 230 8 2, 100 30 2. 1 790 16 2. 2 i pCi/m3 1, 100 53 11 7. 1 0. 56 ND ND ND 0.25 ND ND ND 8.6 ND 4. 1 ND ND 1. 2 ND ND ND ND 31 j 132 pCi-hr/m3 pCi/m3 4, 300 200 130 85 13 ND ND ND 6 ND ND ND 200 ND 100 ND ND 29 ND ND ND ND 200 40 24 ND ND ND ND ND ND ND ND ND 2Z ND 11 ND ND 3.4 ND ND ND ND Results Te-I 133I pCi-hr/m3 pCi/m3 pCi-hr/m3 NGS' 800 160 290 ND ND ND ND ND ND ND ND ND 520 ND 260 ND ND 82 ND ND ND ND 350 250 21 23 1.09 ND ND .ND ND ND ND ND 38 ND 17 ND ND 5.6 ND ND ND ND 1,400 970 250 280 26 ND ND ND ND ND ND ND 900 ND 410 ND ND 130 ND ND ND ND 13 pCi/m3 ND 600 63 25 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi-hr/m3 ND 2, 300 760 300 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ------- Appendix I. Additional Air Sampling Results, April, 1966 (continued) Collection Location Salt Lake City, Utah Sampling Period Total Sample Start Stop Time Volume Day Hr Day Hr (Hr) (.m3) 25 0840 26 0840 24.0 472 26 0840 27 0840 24.0 497 27 0840 28 0845 Z4. 0 497 Col- P P P Beta Activity (pCi/m3) 1.7 0.01 0.08 Beta Exposure (pCi-hr/m3) 41 2. 3 1.8 131! pCi/m3 pCi-hr/m3 ND ND 0.38 9.1 ND ND 132 pCi/m3 ND ND ND Results Te-I pCi-hr/m3 ND ND ND 13 pCi/m3 ND 1.0 ND 3I pCi-hr/m3 ND 24 ND 135 pCi/m3 ND ND ND I pCi-hr/m3 ND ND ND Notes: NGS* - Not gamma scanned. ND - Not detected. P = Prefilter C = Charcoal cartridge ------- Appendix II. Complete Water Sampling Data Samples designated as "Tap" indicate water taken from taps in a dwelling place regardless of the source of the water. Those designated "Spring" were collected at the spring regardless of the subsequent use of the water. Samples labeled "Tank" were taken from a stock tank or trough, and were not used for human con- sumption with one important exception. The domestic tap supply at the Davis Ranch near Hiko, Nevada, consisted of a pipe connected directly to the stock tank. Additional samples were collected at the L. Lee Dairy at Alamo, and the Schofield Dairy at Hiko. These samples were collected as part of a special research project conducted by the Bioenviron- mental Research program and were reported separately in the final report on Pin Stripe by this program (SWRHL-41r). 42 ------- Appendix II. Complete Water Sampling Data T c Date Gross Gross Location Source _ ,_ , »-. i r, 131T 132 133_ 135T Collected Alpha Beta I Te-I I I pCi/1 23 miles south of Pipe Spgs. Nat'l Monument Arizona Fredonia, Arizona 1/2 mile west 15 miles west of Pipe Spgs. Nat'l Monument Arizona Jacob Lake, Arizona Moccasin Indian School Moccasin, Arizona Kaibab Nat'l Forest Camp Mt. Trumbull, Ariz. Mt. Trumbull, Arizona Kanab, Utah Jackson Reservoir Orderville Ranch Chamberlain, Utah Butler Ranch, Nevada 31 mi. S Alamo Alamo, Nevada Frehner Dairy Tank Pond Spring Pond Pond Pond Tank Lake Tank Pond Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank 5/02/66 1.7 5/01/66 5.8 4/30/66 1.4 5/01/66 2.1 4/30/66 <0. 1 5/02/66 0.6 5/02/66 0.3 5/01/66 <0. 1 5/01/66 <0. 1 0.7 4/26/66 1.1 4/27/66 <0. 1 4/28/66 <0.1 4/29/66 0.7 4/30/66 <0.1 5/01/66 2.8 5/02/66 <0.1 5/07/66 2.5 5/10/66 1.4 5/13/66 <0.1 29 24 < 1 20 < 1 6 131 25 27 8.0 41 110 32 90 11 17 21 21 12 23 25 30 60 40 43 ------- Appendix II. Complete Water Sampling Data (continued) Location Alamo, Nevada L. Lee Dairy Alamo, Nevada Mann Ranch Alamo, Nevada A. Sharp Ranch Alamo, Nevada Leo Stewart Dairy Source Tank Tank Tank Tank Tap Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Date Collected 4/26/66 5/01/66 5/02/66 4/26/66 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/02/66 5/05/66 5/06/66 5/07/66 5/08/66 5/09/66 5/10/66 4/25/66 4/26/66 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/02/66 5/07/66 5/10/66 5/13/66 Gross Alpha 1.4 1. 7 <0. 1 <0. 1 0.3 0.3 0. 7 0.3 <0. 1 1.7 1.7 0.6 1.7 <0. 1 1.4 5.5 NGA 1.5 0.3 1.7 1.4 <0. 1 <0. 1 <0. 1 1. 1 1. 1 <0. 1 pCi/1 38 80 30 80 39 42 54 200 50 60 120 32 19 120 14 10 12 12 17 12 13 16 110 24 32 NGB 280 250 410 28 130 19 29 25 13 16 28 19 31 35 Pahranagat Lake, Nevada Alamo, Nevada M. K. Stewart Lake 4/27/66 6.5 Tank 4/26/66 1.1 34 96 220 130 130 160 NGA - no gross alpha NGB - no gross beta 44 ------- Appendix II. Complete Water Sampling Data (continued) Location Alamo, Nevada M. K. Stewart Alamo, Nevada Wright Dairy Ash Springs Nevada Caliente, Nevada 1 mile north Caliente, Nevada 4 miles north Caliente, Nevada 3 miles north on Beaver Dam Road Caliente, Nevada Raymond Ranch Caliente, Nevada Oxborrow Ranch Source Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Tank Stream Spring Pond Spring Pond Pond Pond Pond Tap Tap Tap Date Collected 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/02/66 5/10/66 5/13/66 4/26/66 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/02/66 4/25/66 4/27/66 5/01/66 5/01/66 4/30/66 5/02/66 5/03/66 5/06/66 4/30/66 5/03/66 5/06/66 Gross Alpha 0.6 1. 1 <0. 1 0.6 0.6 <0. 1 1.4 <0. 1 1.4 0.3 1. 1 1. 3 3.9 1. 1 <0. 1 NGA 1.4 5.0 2.8 0.6 1. 1 1.4 1.4 1. 7 0.3 1. 1 ter 131I 132Te-I 133I 135I pCi/1 27 26 13 23 13 13 19 25 36 200 70 80 130 25 15 14 17 6 6 NGB 230 330 480 440 26 19 13 10 16 13 10 7 4 5 NGA - no gross alpha NGB - no gross beta 45 ------- Appendix II. Complete Water Sampling Data (continued) Date Gross Gross ,_ ,__ _„_ Location Source _ „ , A1 , _ 131 132^ 13-3_ 135T Collected Alpha Beta I Te-I I I Caliente, Nevada Mathew's Ranch Caliente, Nevada Charlton Ranch Caliente, Nevada Tennille Ranch Caliente, Nevada Young Ranch Diablo, Nevada Elgin, Nevada Ballow Ranch Hiko, Nevada Hiko pond Hiko, Nevada Fish & Game Dept. Spring Tap 4/28/66 <0. 1 5/10/66 0.3 Pond 4/27/66 5.8 Pond 4/28/66 1.7 pCi/1 < 1 Spring Spring Tap Tap Tap Tap Tap Tap Tap Spring Spring Stream Spring Spring Spring Spring Spring 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/02/66 5/02/66 5/03/66 5/06/66 4/26/66 4/27/66 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/03/66 1.4 4.4 0.7 2.2 0.3 2.8 13 8.3 1.7 1.7 2.5 0.6 6.9 1. 1 1. 1 4. 7 2.8 16 8 8 9 11 6 32 36 7 17 16 8 20 10 17 10 9 Stream Spring Stream Spring Stream Spring Tap 4/29/66 4/29/66 4/30/66 4/30/66 5/01/66 5/01/66 5/02/66 0.3 3.3 1. 7 1. 7 0. 3 3.6 1. 1 8 10 12 2 7 12 3 92 70 110 23 60 46 ------- Appendix II. Complete Water Sampling Data (continued) Location Hiko, Nevada Crystal Springs Hiko, Nevada Davis Ranch * Hiko, Nevada Schofield Dairy Panaca, Nevada C & G Ranch Panaca, Nevada E. Deck Ranch Source Spring Tap Tap Tap Tap Tap Tap Tap Tap Tap Tap Tap Tap Tap Tap Tap Tank Tank Tank Tap Spring Spring Spring Spring Spring Tap Tap Spring Spring Spring Spring Tank Date Collected 4/27/66 4/26/66 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/02/66 5/03/66 5/04/66 5/05/66 5/06/66 5/07/66 5/08/66 5/09/66 5/13/66 4/25/66 4/26/66 4/27/66 4/27/66 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/02/66 4/26/66 4/27/66 4/28/66 4/29/66 4/30/66 5/11/66 Gross Alpha <0. 1 1.4 <0. 1 2.5 5.0 3.3 3.6 4. 7 3. 3 3.3 3.9 3.6 2.8 2.5 3.9 <0. 1 NGA 6.9 3.6 4.4 1.4 4.4 0. 3 0.3 0.3 2.8 <0. 1 <0. 1 0.3 0.7 <0. 1 0. 3 Gr°SS 131 132 T 133 135 Beta I Te-I I I pCi/1 10 151 3860 80 270 35 50 30 60 19 30 29 8 40 14 11 10 17 8 13 16 14 12 11 NGB 500 820 1100 940 136 79 140 30 16 8 70 18 12 4 8 8 9 9 20 25 21 47 NGA - no gross alpha NGB - no gross beta ------- Appendix II. Complete Water Sampling Data (continued) Location Panaca, Nevada K. Lee Ranch Pioche, Nevada Delmue Ranch Pioche, Nevada Rose Valley Ranch Pioche, Nevada Horlacher Ranch Pioche, Nevada County Courthouse Sunnyside, Nevada Adams-McGill Res Ursine, Nevada Meadow Valley Res Ursine, Nevada 3. 9 miles north of Meadow Valley Res Ursine, Nevada 1/4 mile west Source Tank Tap Tap Tap Stream Stream Stream Stream Stream Stream Stream Stream Stream Stream Tap Tap Tap Lake Lak Stream Stream Stream Stream Date Collected 4/26/66 5/02/66 5/03/66 5/06/66 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 4/26/66 4/27/66 4/29/66 4/30/66 5/01/66 5/03/66 4/26/66 4/27/66 5/05/66 4/30/66 4/30/66 4/29/66 4/30/66 5/01/66 Gross Alpha 0.6 2.2 2.8 1. 7 1.4 1.4 2.5 3.3 1. 7 2.8 5.8 3.9 0.9 0.6 <0. 1 1.4 1. 7 1.7 2.5 4.4 1.4 2.8 CLr°8S 131 132^ T 133T 135T Beta I Te-I I I pCi/1 36 2 7 8 20 14 19 11 13 15 15 17 21 2 7 20 18 11 17 10 12 14 Ursine, Nevada 6. 8 miles northeast Stream 5/01/66 1.1 16 48 ------- Appendix II. Complete Water Sampling Data (continued) Location Ursine, Nevada 7 miles north Ursine, Nevada 13 miles north in Eagle Valley Ursine, Nevada 16 miles north in Eagle Valley Ursine, Nevada Eagle Valley Lake Ursine, Nevada Eagle Valley Creek Ursine, Nevada Donahue Ranch Ursine, Nevada Lytle Ranch Source Stream Stream Tank Tank Tank Lake Lake Lake Stream Stream Stream Stream Tank Tank Tank Tank Stream Stream Tank Tank Tank Tank Tank Tank Tank Tank Date Collected 4/26/66 4/29/66 4/29/66 4/29/66 5/01/66 4/27/66 4/28/66 4/29/66 4/27/66 4/28/66 4/28/66 4/28/66 4/28/66 4/29/66 5/01/66 5/02/66 5/03/66 5/06/66 4/26/66 4/27/66 4/28/66 4/29/66 4/30/66 5/01/66 5/02/66 5/03/66 Gross Alpha <0. 1 <0. 1 1. 1 1.4 1. 1 <0. 1 3.9 3.3 4.5 <0. 1 0. 6 0.6 4. 7 2.2 0. 8 1. 1 6. 1 3.6 <0. 1 1.4 2.2 <0. 1 2.2 2.3 2.2 1.7 ross 132m T 133T 135T Beta I Te-I I I 23 60 70 120 14 15 42 14 42 13 15 20 <1. 0 13 19 60 4 8 5 21 5 23 280 90 90 40 10 15 10 14 16 5 6 Ursine, Nevada McCrosky Ranch Tap 5/02/66 <0. 1 49 ------- Appendix III. Vegetation Sampling Data Samples designated as "hay", "pasture", "green chop", or "silage" were collected to be representative of dairy cattle feed at milk sampling locations. Hay, as listed in the Appendix, is dry vegeta- tion in storage which may or may not have been covered during cloud passage. "Natural" refers to any naturally growing or native vegetation which was not being used as dairy cattle feed. 50 ------- Appendix III. Vegetation Sampling Data , .. Date Location Collected Alamo, Nevada Frehner Dairy 4/26 4/27 4/28 4/29,30 5/01 5/02 5/6,7,8,9 5/10, 13 L. Lee Dairy 4/26 4/27,29,30 4/28 4/29,30 5/1,3,5,8 5/2,3,6,7 5/9, 10, 11, 12 5/13 5/1,6,7,8,9 5/10, 11, 12, 13 4/26,28,29,30 4/27,30 5/2,3,4,5 5/7,9, 11, 12 5/6, 7,8, 10, 13 4/26,27 4/28,29,30 5/1,2,3,4 5/5,6,7,8 5/9,11, 13,25 Mann Ranch 5/1,2 Sharp Ranch 4/26, 27, 28, 28, 30 4/26 5/1-10 Leo Stewart 4/25,26 4/27 4/28 4/29,30 No. of _ Fresh fission Type Samples Products 1 1 1 2 1 1 6 2 4 1 2 4 4 4 1 5 7 4 2 8 4 6 36 4 11 8 4 2 5 1 10 2 1 1 2 Silage Hay Silage Silage Hay Silage Green chop Green chop Grain Grain Grain Grain Grain Grain Grain Fresh alfalfa Fresh alfalfa Hay Hay Hay Hay Hay Green Chop Green Chop Green Chop Green Chop Green Chop Hay Pasture Hay Pasture Hay Hay Green Chop Hay P ND ND P ND P P P ND P P ND ND P P P P ND P P ND P P P P P ND P P P P ND P P P -positive ND-not detectable 51 ------- Appendix III. Vegetation Sampling Data (continued) Location Alamo, Nevada(continued) Date Collected No. of Samples Type Fresh fission Products Leo Stewart (continued) 5/6 M. K. Stewart Dairy Wright Dairy Highway 93 at Alamo 5 mi S of Alamo 10 mi S of Alamo 15 mi S of Alamo 20 mi S of Alamo 25 mi S of Alamo 29. 5 mi S of Alamo 5/1,2 ,7,8,10,13 4/25 4/26,27,28 4/29,30 5/1,2 5/10, 13 4/26 4/27 4/28,29,30 5/1,2 4/28 4/28 4/28 4/28 4/28 4/28 4/28 2 5 1 3 2 2 2 1 1 3 2 1 1 1 1 1 1 1 Hay Green Chop Hay Green Chop Silage Silage Green Chop Silage Hay Hay Hay Natural Natural Natural Natural Natural Natural Natural ND P P P ND ND P P P ND ND P P P P P P P (Butler Ranch turnoff) Caliente, Nevada Charlton Ranch L. Mathews Ranch Oxborrow Ranch Raymond Ranch Tennille Ranch 4/27,28,29 4/28,29,30 4/28 4/29,30 5/1 5/1 4/30 & 5/1 4/30 &5/1 5/2,3 4/30 5/1 3 3 1 2 1 1 2 2 2 1 1 Green Chop Pasture Green Chop Hay Pasture Hay Hay Pasture Hay Pasture Pasture ND P P ND P ND ND ND ND ND P P -positive ND-not detectable 52 ------- Appendix III. Vegetation Sampling Data(continued) Location Date Collected No. of Samples Type Fresh fission Products Caliente, Nevada(continued) Young Ranch 4/26 4/27,30 4/26,27,29,30 4/28 4/29 5/1 5/1 1 2 4 1 1 1 1 Hay Hay Pasture Natural Green Chop Hay Pasture P ND P P ND ND P Highway 93 at Caliente 4/28,29 1 mi N of Caliente 4 mi N of Caliente 5 mi N of Caliente 5 mi N of Caliente 5 mi N of Caliente 7 mi N of Caliente 10 mi N of Caliente 10 mi N of Caliente 13 mi N of Caliente 15 mi N of Caliente 15 mi N of Caliente 16 mi N of Caliente 19 mi N of Caliente 22 mi N of Caliente Elgin, Nevada Blue Ranch and 30 5/1 4/26,27 4/26,27 4/28,29 4/30 5/1 4/26,27 4/26,27,28 29, and 30 5/1 4/27 4/28,29,30 5/1 4/26,27 4/26,27 4/26,27 4/29 4/30 & 5/1 Highway 93, Glendale, Nev. 4/30 5 mi N of Glendale 10 mi N of Glendale 15 mi N of Glendale 20 mi N of Glendale 25 mi N of Glendale 30 mi N of Glendale 4/30 4/30 4/30 4/30 4/30 4/30 3 1 2 2 2 1 1 2 5 1 1 3 1 2 2 2 1 2 1 1 1 1 1 1 1 Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Green Chop Hay Natural Natural Natural Natural Natural Natural Natural P P P P P ND P P P ND P P P P P P ND ND ND ND ND P ND P P (Butler Ranch turnoff) P -positive ND-not detectable 53 ------- Appendix III. Vegetation Sampling Data (continued) T .. Date Location Collected Hiko, Nevada Davis Ranch 4/26-30 5/1-7 5/8,9,13,25 Schofield Dairy 4/25 4/26-29 4/30 4/30 & 5/1 5/1 5/2-6 5/6&7 5/7-10 5/11,12/13 4/26,28,29,30 5/1-6 5/7-11 5/12 &5/13 5/13 4/26,28,29,30 4/27 5/1,2,5,6,7 5/3,4 5/8,9,12 5/10, 11, 13 4/25-27 4/28-30 5/1-4 5/5-8 5/9-12 5/13, 16, 19,25 Coyote Summit, 30 mi W of Jet. US 93 &25 on Hway 25 4/26 25 mi W Jet. 93 & 25 on Hway 25 4/26 20 mi W Jct.93 &25 on Hway 25 4/26 No. of _ Fresh fission Type Samples Products 5 7 4 1 6 1 2 1 9 2 5 3 5 11 10 4 1 4 2 5 2 3 3 32 6 8 8 5 4 1 1 1 Pasture Pasture Pasture Pasture Hay Hay Hay Hay Hay Hay Hay Hay Fresh alfalfa Fresh alfalfa Fresh alfalfa Fresh alfalfa Fresh alfalfa Grain Grain Grain Grain Grain Grain Green Chop Green Chop Green Chop Green Chop Green Chop Green Chop Natural Natural Natural P P P P P ND P ND P ND P P P P P P ND ND P P ND ND P P P P P P P ND P P P -positive ND-not detectable 54 ------- Appendix III. Vegetation Sampling Data (continued) Location Hancock Summit, 15 mi W Jet. 93 & 25 on Hway 25 10 mi W Jet. 93 & 25 on Hway 25 5 mi W Jet 93 & 25 on Hway 25 Jet. of US 93 & Hway 25, Hiko, Nevada 5 mi E Jet 93 & 25 on US 93 10 mi E Jet 93 & 25 on US 93 15 mi E Jet 93 & 25 on US 93 20 mi E Jet 93 & 25 on US 93 Delamar Jet. , 25 mi E of Jet 93 & 25 on US 93 30 mi E Jet 93 & 25 on US 93 35 mi E Jet 93 & 25 on US 93 40 mi E Jet 93 & 25 on US 93 Panaca, Nevada C & G Ranch 4/29, E. Deck Ranch Date Collected 4/26 4/26 4/26 4/26 4/26 4/26 4/26 4/26 4/26 4/26 4/26 4/26 4/27,28 30&5/1 4/26 4/26 4/27 4/27,29,30 4/29,30 4/30 5/1 No. of Samples 1 1 1 2 1 1 1 1 1 1 1 1 2 3 1 1 1 3 1 1 1 Type Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Green Chop Hay Hay Green Chop Grass Hay Grass Pasture Grass Fresh fission Products P P P P P P P P P P P P ND ND P P P ND ND P ND P -positive ND-not detectable 55 ------- Appendix III. Vegetation Sampling Data (continued) Location NW side of Panaca Panaca, 5 mi N on Delmue Ranch 5 mi N of Panaca on US 93 5 mi N of Panaca on US 93 5 mi E of Panaca on Hway 25 5 mi E of Panaca on Hway 25 10 mi E of Panaca on Date Collected 4/27 4/30&5/1 4/30 5/1 4/27,28,30 4/29&5/1 Hway 25 4/27,29 &5/1 10 mi E of Panaca on Hway 25 15 mi E of Panaca on Hway 25 Pioche, Nevada Delmue Ranch Horlacher Ranch Rose Valley Ranch 5 mi N or Pioche on US 93 10 mi N of Pioche on US 93 15 mi N of Pioche on US 93 20 mi N of Pioche on US 93 4/28,30 4/28,29 4/27, 30 4/27,29 4/28 &5/1 5/1 4/27-30 4/27-30 5/1 5/1 4/26,27 4/26 4/27,28,29 4/27,28 4/27,28 4/28 4/28 No. of Samples 1 2 1 1 3 2 3 2 2 2 2 3 1 4 4 1 1 2 1 4 2 2 1 1 Type Natural Natural Natural Natural Natural Natural Natural Natural Natural Hay Pasture Natural Hay Natural Hay Natural Hay Hay Pasture Natural Natural Natural Natural Natural Fresh fission Products P P P P ND P P ND ND P P P ND P ND P ND P P P P P P P P -positive ND-not detectable 56 ------- Appendix III. Vegetation Sampling Data (continued) Date Location Collected 25 mi N of Pioche on US 93 30 mi N of Pioche on US 93 35 mi N of Pioche on US 93 40 mi N of Pioche on US 93 45 mi N of Pioche on US 93 50 mi N of Pioche on US 93 55 mi N of Pioche on US 93 Delmue Ranch road, Pioche 2 mi S of Delmue Ranch Pioche 5 mi S of Delmue Ranch Pioche 4/28 5 mi N of Delmue Ranch Pioche 4/29 10 mi N of Delmue Rn. , Pioche 4/29 3. 5 mi E of Pioche 5 mi E of Pioche 4/29, 30 10 mi E of Pioche 4/29, 30 Ursine, Nevada Burnt Cabin Ranch Donahue Ranch 5/2,3,5 Lytle Ranch 4/28 4/28 4/28 4/28 4/28 4/28 4/28 4/29 4/27 &5/1 &5/1 &5/1 5/1 &5/1 &5/1 5/1 4/28 4/29 ,6,10 5/4 4/26 4/27-30 5/1 No. of Type Samples 1 1 1 1 1 1 1 1 1 2 2 1 1 3 3 1 1 1 5 1 1 4 1 Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Pasture Hay Pasture Pasture Pasture Hay Hay Fresh fission Products P P P P ND P P P P P P P P P P P P P P ND P ND ND P -positive ND-not detectable 57 ------- Appendix III. Vegetation Sampling Data (continued) Date Location Collected 1/4 mi W of Ursine 4/28, 29, 30 1/4 mi W of Ursine 5 mi W of Ursine 10 mi W of Ursine 5/1 4/28 4/28 5 mi N of Ursine 4/27-30 5 mi N of Ursine 6. 5 mi N of Ursine 7. 0 mi N of Ursine 8. 5 mi N of Ursine 10 mi N of Ursine 4/28,29 15 mi N of Ursine 4/29 20 mi N of Ursine 4/29 Meadow Valley Reservoir Ursine 1/2 mi W of Fredonia, Arizona 8 mi W of Fredonia, Ariz. Moccasin, Arizona Mt. Trumbull, Arizona 16 mi E of Mt. Trumbull Pipe Springs National Monu- ment, Arizona 5 mi S of Pipe Springs Matheson Dairy, Cedar City, Utah Gonders Ranch, Garrison, Utah Airport, Kanab, Utah 2 mi S of Mt. Carmel Jet. , Utah R. Cox Dairy St. George, Utah 5/1 4/27 4/26 4/27 &5/1 &5/1 &5/1 4/30 5/1 5/1 4/30 5/2 5/2 4/30 5/2 4/27 4/27 5/4 5/4 5/1 5/1 4/27 4/27 4/27 No. of Samples 3 1 1 1 4 1 1 1 1 3 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Type Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Natural Silage Hay Hay Natural Natural Natural Pasture Silage Hay Fresh fission Products P P P P P P P P P P P P P ND ND ND ND ND ND ND ND ND ND P ND ND ND ND ND P -positive ND-not detectable 58 ------- Appendix IV. Complete Milk Sampling Data Date of Location . Milking Alamo, Nevada Frehner Dairy 4/25 4/26 4/26 4/27 4/27 4/28 4/29 4/29 4/30 4/30 5/01 5/01 5/02 5/02 5/03 5/03 5/04 5/04 5/05 5/05 5/06 5/06 5/07 5/07 5/08 5/08 5/09 5/09 5/10 5/11 5/12 5/13 L. Lee Dairy 4/25 4/26 4/26 4/27 4/27 Time of Day PM AM PM AM PM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM AM AM AM PM AM PM AM PM 131I ND 50 50 30 40 ND 50 ND ND ND ND ND ND ND ND ND ND ND ND ND 50 30 50 ND 50 50 ND 60 60 ND ND ND 90 600 600 1100 980 133i 80 390 430 190 110 ND 40 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND • ND ND ND 280 340 1900 3600 2500 pCi/1 137 Cs 30 30 ND 30 25 ND 30 20 30 20 15 15 ND ND ND 40 35 25 20 15 10 20 20 20 20 10 10 20 25 ND ND 15 50 65 ND ND ND 89C 90 Sr Sr ND 5 ND 5 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 5 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 2 ND 5 no chem no chem ND 5 ND 5 59 ------- Appendix IV. Complete Milk Sampling Data (continued) Date of Location . Milking Alamo, Nevada L. Lee Dairy 4/28 (continued) 4/28 4/29 4/29 4/30 4/30 5/01 5/01 5/02 5/02 5/03 5/03 5/04 5/04 5/05 5/05 5/06 5/06 5/07 5/07 5/08 5/08 5/09 5/25 6/07 6/13 6/17 6/20 7/07 7/14 7/22 7/27 8/03 Mann Ranch 4/30 5/01 5/01 5/02 5/02 Time of Day AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM PM AM AM AM AM AM AM AM AM PM AM PM AM PM 131i 800 1400 800 760 440 530 630 610 460 520 450 450 300 340 290 260 200 220 200 220 130 150 210 60 20 NA* ND 20 NA ND ND ND ND ND ND ND ND ND 133x 1400 1700 730 540 260 210 190 150 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND NA ND ND NA- ND ND ND ND ND ND ND ND ND pCi/1 137_ Cs ND ND ND ND ND ND ND ND 60 65 35 40 55 60 60 55 55 50 50 45 40 40 45 15 15 NA ND 20 20 25 10 10 10 ND 30 20 30 ND 89C 90_ Sr Sr ND 6 ND 6 ND 6 ND 6 ND 4 ND 4 ND 5 ND 5 ND 7 ND 7 ND 6 ND 6 ND 5 ND 5 no chem no chem no chem no chem no chem no chem no chem no chem ND 8 5 4 5 5 15 2 ND 5 ND 3 NA NA 5 1 ND 4 ND 3 ND 2 no chem no chem no chem no chem no chem 60 ------- Appendix IV. Complete Milk Sampling Data(continued) Location Alamo, Nevada Mann Ranch (continued) Sharp Ranch Leo Stewart Dairy Date of Milking 5/03 5/03 5/04 5/04 5/05 4/26 4/26 4/27 4/27 4/28 4/28 4/29 4/30 4/30 5/01 5/01 5/02 5/03 5/04 5/05 5/05 5/06 5/07 5/08 5/09 5/10 5/11 5/12 5/13 5/25 4/25 4/26 4/26 4/27 4/27 4/28 4/28 Time of Day AM PM AM PM AM AM PM AM PM AM PM AM AM PM AM PM AM AM AM AM PM AM AM AM AM AM AM AM AM AM PM AM PM AM PM AM PM 131I ND ND ND ND ND 1600 1000 2000 840 2100 570 1800 1300 1500 1200 780 800 570 520 430 270 250 190 190 120 ND ND 60 80 50 70 60 50 270 40 190 220 133i ND ND ND ND ND 7300 5500 7800 2400 5100 840 1800 650 480 320 180 110 ND ND ND ND ND ND ND ND ND ND ND ND ND 240 280 400 850 110 400 270 pCi/1 137 Cs 35 20 20 25 ND ND ND ND ND ND 45 ND 90 110 160 80 80 30 60 65 50 70 30 40 20 25 20 25 30 20 40 45 25 45 25 ND 25 89C 90 Sr Sr no chem no chem no chem no chem no chem ND 5 no chem no chem no chem 5 3 5 3 no chem no chem 5 3 no chem no chem 5 5 5 4 5 4 no chem no chem no chem no chem no chem no chem ND 5 ND 5 ND 6 ND 7 25 5 ND 6 no chem no chem ND 6 no chem ND 8 no chem 61 ------- Appendix IV. Complete Milk Sampling Data(continued) Date of Location . Milking Alamo, Nevada Leo Stewart Dairy 4/29 (continued) 4/29 4/30 4/30 5/01 5/02 5/02 5/03 5/03 5/04 5/04 5/05 5/05 5/06 5/06 5/07 5/07 5/08 5/08 5/09 5/09 5/10 5/11 5/12 5/13 M. K. Stewart Dairy 4/25 4/26 4/26 4/27 4/27 4/28 4/28 4/29 4/29 4/30 4/30 5/01 5/01 Time of Day AM PM AM PM AM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM AM AM AM PM AM PM AM PM AM PM AM PM AM PM AM PM 131I 100 60 60 30 ND ND ND ND ND 130 100 90 ND 20 40 160 100 110 70 ND ND 20 ND ND ND ND 30 ND 170 280 340 590 500 300 190 150 80 ND 133, 100 40 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 90 130 60 630 870 610 770 470 ND 100 70 20 ND pCi/1 137 Cs 45 35 . 40 50 30 35 ND 35 40 50 35 35 45 40 50 55 15 30 35 15 20 30 25 20 40 35 15 ND 50 40 ND ND 45 50 75 ND 45 35 89 90 Sr Sr no chem no chem ND 7 ND 7 no chem no chem no chem ND 7 no chem no chem no chem ND 4 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 9 ND 9 no chem no chem no chem no chem no chem no chem no chem no chem ND 4 ND 4 no chem no chem 62 ------- Appendix IV. Complete Milk Sampling Data(continued) Date of Location . Milking Alamo, Nevada M. K. Stewart Dairy 5/02 (continued) 5/02 5/03 5/03 5/04 5/04 5/05 5/05 5/06 5/06 5/07 5/07 5/08 5/08 5/09 5/09 5/10 5/11 5/12 5/13 Wright Dairy 4/25 4/26 4/26 4/27 4/27 4/28 4/28 v 4/29 4/29 4/30 4/30 5/01 5/01 5/02 5/03 5/04 Time of Day AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM AM AM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM 131I ND 30 ND ND ND ND ND ND ND ND 30 ND ND ND ND ND ND ND 80 40 ND 50 30 ND ND ND 30 NO- ND ND ND ND ND 20 ND ND 133i ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 100 330 170 110 ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 13?Cs 50 30 30 50 ND ND ND 35 20 30 35 15 15 25 15 10 20 25 20 15 10 45 20 20 ND 10 15 35 25 25 ND ND 15 30 10 ND 890 900 Sr Sr no chem no chem no chem ND 3 no chem no chem ND 3 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 4 ND 3 ND 3 no chem no chem no chem no chem no chem no chem no chem no chem ND 3 no chem no chem no chem no chem no chem 63 ------- Appendix IV. Complete Milk Sampling Data (continued) Date of Location . Milking Caliente, Nevada Charlton Ranch 4/28 4/29 4/30 5/01 5/04 5/06 Oxborrow Ranch 4/30 5/01 5/03 5/05 5/07 5/09 Raymond Ranch 4/30 5/01 5/02 5/03 5/04 5/08 5/10 Tennille Ranch 4/29 4/30 5/01 5/03 5/04 5/06 5/08 5/10 Young Ranch 4/25 4/27 4/28 4/29 4/30 5/03 5/05 5/07 5/10 Time of Day PM AM & PM AM & PM PM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM PM PM PM AM AM AM AM AM. PM AM AM PM PM AM AM AM AM 131I 130 ND ND ND ND ND ND ND ND ND ND ND 100 ND 70 50 ND ND ND 40 ND 50 ND 20 ND ND ND ND 30 30 ND 30 ND ND ND ND 133 ND ND ND ND ND ND ND ND ND ND ND ND 500 ND ND ND ND ND ND 20 ND ND ND ND ND ND ND ND 90 70 ND ND ND ND ND ND pCi/1 137^ Cs 85 10 15 25 20 10 25 25 ND ND 30 15 ND 40 15 35 ND 15 15 15 ND 45 ND 10 15 15 15 25 30 30 ND 15 ND ND 25 15 89C 90 Sr Sr no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 4 no chem no chem no chem no chem no chem no chem ND 10 ND 3 ND 5 no chem no chem ND 3 no chem no chem , no chem no chem no chem no chem no chem no chem no chem. ND 4 no chem no chem no chem 64 ------- Appendix IV. Complete Milk Sampling Data (continued) Location Elgin, Nevada Blue Ranch Hiko, Nevada Davis Ranch Schofield Dairy Date of Milking 4/28 4/29 4/30 5/01 5/04 4/26 4/27 4/28 4/29 4/30 5/01 5/02 5/03 5/04 5/05 5/06 5/07 5/08 5/09 5/10 5/11 5/12 5/25 6/07 6/14 6/20 6/29 7/05 7/12 7/18 7/26 4/25 4/26 4/26 4/27 Time of Day PM PM PM PM AM PM PM PM PM PM PM PM PM PM PM PM PM PM PM PM PM PM PM PM AM PM AM AM NA NA PM PM AM PM' AM 131I ND ND ND ND ND 1800 3500 2900 2000 2200 1700 3000 2300 1800 970 700 510 350 240 240 130 130 80 ND ND ND NA NA NA 70 ND 320 1900 3300 4400 133i ND ND ND ND ND 7100 7800 3500 1200 1100 620 650 570 260 ND ND ND ND ND ND ND ND ND ND ND ND NA NA NA ND ND 1000 6100 20, 000 15,000 pCi/1 13?Cs 35 40 40 55 55 ND ND ND ND ND ND ND ND ND ND ND ND ND 45 75 60 80 45 ND ND 10 NA 30 30 25 25 ND ND ND ND 89C 90Q Sr Sr no chem no chem no chem no chem no chem 5 3 no chem 15 4 20 4 no chem no chem no chem 50 7 35 5 no chem no chem no chem no chem 20 5 15 7 10 6 10 5 5 15 2 20 8 15 6 10 5 5 3 5 3 NA NA ND 4 ND 4 5 4 5 4 10 3 65 ------- Appendix IV. Complete Milk Sampling Data(continued) Date of Location . Milking Schofield Dairy 4/27 (continued) 4/28 4/28 4/29 4/29 4/30 4/30 5/01 5/01 5/02 5/02 5/03 5/03 5/04 5/04 5/05 5/05 5/06 5/06 5/07 5/07 5/08 5/08 5/13 Las Vegas, Nevada Anderson Dairy #1 4/26 (Milk from Hidden 4/28 Valley, Nevada) 4/29 4/30 Anderson Dairy #2 4/26 (Milk from St. George, 4/28 Utah) 4/29 5/01 5/03 5/05 5/07 5/09 Time of Day PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM AM PM PM AM AM AM AM AM AM AM PM PM PM PM PM 4800 4000 3700 1500 1000 500 450 250 140 130 100 80 70 ND 30 ND 40 40 60 30 ND 50 40 ND ND ND ND ND ND ND ND ND ND ND ND ND [ I 12,000 6,700 4,700 1,400 730 290 150 70 40 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 137^ Cs ND ND ND ND ND ND ND 160 ND 30 40 60 30 30 20 15 30 25 30 35 25 35 20 25 25 20 25 25 ND 10 ND 50 25 20 25 30 89C 90 Sr Sr no chem 10 3 10 3 ND 4 ND 4 ND 5 ND 5 ND 5 ND 5 ND 5 ND 5 ND 5 ND 5 ND 5 ND 5 no chem no chem no chem no chem ND 11 no chem no chem no chem ND 5 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem 66 ------- Appendix IV. Complete Milk Sampling Data(continued) Location Las Vegas, Nevada Anderson Dairy #3 (Milk from Mesquite, Nev. , Logandale, Nev. , and Miner s- ville, Utah) Anderson Dairy #4 (Milk from Alamo, Nev. ) Date of Milking 4/25 4/28 4/28 4/29 5/01 5/02 5/03 5/04 5/05 5/07 5/08 5/09 4/28 4/30 5/01 5/02 5/02 5/04 5/04 5/05 5/06 5/06 5/07 5/08 5/08 5/09 5/10 5/10 5/12 5/14 5/16 5/19 Time of Day AM AM PM PM PM PM PM PM PM PM PM PM AM AM PM AM PM AM PM AM AM PM AM AM PM AM AM PM PM PM PM AM 131I ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 60 ND ND 50 ND ND ND ND ND 60 ND ND 30 ND ND 100 100 133I ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 Cs 10 20 30 15 20 35 15 35 20 15 30 20 30 ND 30 40 ND ND 30 30 20 25 30 25 10 30 25 25 20 20 15 20 89C 90_ Sr Sr no chem no chem no chem no chem no chem ND 7 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 5 no chem ND 5 no chem no chem no chem no chem no chem Anderson Dairy #5 (Processed Milk) 5/02 AM ND ND 10 no chem 67 ------- Appendix IV. Complete Milk Sampling Data (continued) Location Las Vegas, Nevada Arden Dairy Meadow Gold Dairy Vegas Valley Farms Lund, Nevada McKenzie Dairy Panaca, Nevada C & G Ranch E. Deck Ranch Date of Milking 4/26 4/28 4/29 4/29 4/30 5/01 5/02 5/03 4/29 5/02 4/26 4/28 4/24 4/26 4/27 4/28 4/29 5/05 4/28 4/29 4/30 5/02 4/26 4/27 4/28 4/29 4/30 5/01 5/02 Time of Day PM AM AM PM AM AM AM AM PM AM AM AM PM AM AM AM AM AM AM PM PM AM AM AM AM AM AM AM AM 131I ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 50 70 ND ND ND ND ND 133i ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 160 220 ND ND ND ND ND pCi/1 137 Cs 10 ND 15 15 30 ND 30 25 30 10 15 30 30 20 30 35 20 30 ND 35 70 90 55 60 35 35 30 40 60 89C 90 Sr Sr no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem 68 ------- Appendix IV. Complete Milk Sampling Data (continued) Location Panaca, Nevada K. Lee Ranch Pioche, Nevada Delmue Ranch Horlacher Ranch Rose Valley Ranch Ursine, Nevada Donahue Ranch Lytle Ranch Date of Milking 4/26 4/27 4/30 4/30 5/02 5/03 5/04 5/05 5/06 5/07 5/08 5/09 5/10 4/27 4/27 4/28 4/29 4/30 5/01 5/03 4/26 4/28 . 5/03 5/04 5/05 5/06 5/10 4/27 4/28 4/29 4/30 5/01 Time of Day AM AM AM PM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM AM PM PM AM AM AM AM AM AM AM AM AM AM^ 131I ND 20 50 170 160 120 100 ND 50 ND ND ND ND 30 ND ND ND ND ND ND ND 1100 320 ND 170 140 70 ND ND ND ND ND 133 ND 210 20 60 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 1200 ND ND ND ND ND ND ND ND ND ND pCi/1 137_ Cs 15 ND 35 40 65 40 50 10 30 25 15 30 15 60 50 20 50 25 20 45 15 45 20 40 25 10 15 20 30 ND 30 30 89- 90 Sr Sr no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 15 ND 19 no chem no chem ND 14 no chem no chem no chem no chem no chem 69 ------- Appendix IV. Complete Milk Sampling Data (continued) Location Ursine, Nevada Lytle Ranch (continued) McCrosky Ranch Fredonia, Arizona M. Button Ranch Moccasin, Arizona O. Johnson Ranch Mt. Trumbull, Ariz. O. Bundy Ranch Barstow, Calif. Hills Dairy Brawley, Calif. Dateland Dairy Escondido, Calif. Bernard Dairy Date of Milking 5/02 5/03 5/01 5/02 5/04 4/30 5/01 5/02 5/04 5/05 4/30 5/01 5/02 5/02 5/04 5/05 5/06 5/08 5/09 5/10 5/16 5/04 5/05 5/07 5/04 5/05 5/07 Time , of Day AM AM AM AM AM PM AM AM PM AM PM AM AM AM PM AM AM AM AM AM AM AM AM AM AM AM AM 131I ND ND ND ND ND ND ND 70 ND ND ND ND ND 20 ND ND ND ND ND ND ND ND ND ND ND ND ND 133 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 137_ Cs 30 50 65 50 40 ND ND 45 ND 10 40 ND 55 35 15 25 ND 10 10 ND ND ND 10 ND 10 15 10 89C 90., Sr Sr no chem no chem no chem no chem no chem no chem ND 9 ND 10 no chem no chem no chem no chem no chem ND 6 no chem no chem no chem no chem no chem ND 1 no chem no chem no chem no chem ND 2 no chem no chem 70 ------- Appendix IV. Complete Milk Sampling Data(continued) Location Los Angeles, Calif. Jessup Farms Newhall, Calif. Burbank Creamery Riverside, Calif. Orange Crest Dairy Alamosa, Colorado Alamosa Milk Co. Brush, Colorado McLagan Bros. Creamery Canon City, Colo. Monarch Dairy, Inc. Colorado Springs, Colo. Senton Dairy Co. Date of Milking 5/05 5/06 5/07 5/08 5/09 5/10 5/11 5/05 5/06 5/04 5/05 5/06 5/07 5/08 5/09 4/29 4/30 5/03 5/04 4/27 4/28 4/29 4/30 5/01 5/02 4/26 4/29 - 4/28 4/30 Time of Day AM AM AM AM AM AM AM AM AM PM PM. PM PM PM PM AM AM AM AM AM AM AM PM PM PM PM AM AM AM 131I ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 133 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 137_ Cs 15 25 20 20 25 10 20 60 ND 10 15 15 10 20 ND 20 20 20 10 10 55 45 ND ND 30 15 15 30 10 89_ 90C Sr Sr ND 2 no chem no chem no chem no chem no chem no chem no chem no chem ND 2 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem 71 ------- Appendix IV. Complete Milk Sampling Data (continued) Date of Location . Milking Senton Dairy Co. (continued) Craig, Colorado Yampa Valley Dairy Delta, Colorado Arden Meadow Gold Dairy Durango, Colo. Clover Rich Dairy Ft. Collins, Colo. Poudre Valley Cream- ery Glenwood Springs, Colo. Glenwood Creamery Grand Junction, Colo. Clymer's Rose Glen Dairy 5/01 5/02 4/28 5/01 5/04 5/08 5/09 5/11 4/27 4/28 4/29 4/28 4/29 4/30 5/01 5/02 5/03 4/27 4/28 4/29 4/30 5/01 5/02 5/03 5/04 4/26 4/27 4/28 4/29 5/03 4/26 4/27 4/29 Time of Day AM AM PM PM PM PM PM PM AM PM PM PM PM PM AM PM AM AM AM AM AM AM AM AM AM PM AM AM PM AM AM PM AM 131: ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 133i ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 137Cs 20 25 10 30 15 20 20 30 ND 30 25 15 20 15 20 10 25 35 40 40 ND 25 35 45 30 40 35 40 35 40 ND 20 15 89_ 90Q Sr Sr ND 1 no chem ho chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 14 no chem no chem no chem no chem no chem ND 10 ND 10 no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 10 72 ------- Appendix IV. Complete Milk Sampling Data (continued) Location Date of Milking Time of Day pCi/1 131. 133. 137 Cs 89 Sr 90 Sr Grand Junction, Colo. Clymer's Rose Glen 5/01 Dairy 5/02 Monte Vista, Colo. Sunrise Creamery 4/29 PM PM AM ND ND ND ND ND ND ND 10 10 no chem no chem no chem Rocky Ford, Colo. Rocky Ford Coop. Creamery Trinidad, Colo. Petramala Dairy Blackfoot, Idaho Cammack Dairy Buhl, Idaho Smith's Dairy Products Inc. Burley, Idaho Wymore Dairy 4/27 4/28 4/29 4/30 4/30 5/02 5/02 4/27 4/28 4/29 4/30 5/01 5/03 4/26 4/27 4/28 4/26 4/27 4/28 4/29 4/30 5/02 4/26 4/27 4/28 AM AM AM AM PM AM PM AM PM PM AM AM PM PM AM AM PM AM AM AM AM AM AM AM AM ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 20 ND ND 15 20 ND ND 10 10 ND 75 30 10 25 65 25 45 25 55 20 20 25 45 55 ND 6 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem 73 ------- Appendix IV. Complete Milk Sampling Data(continued) Location Burley, Idaho Wymore Dairy (continued) Coeur d'Alene, Idaho Coeur d'Alene Creamery Grange ville, Idaho Grangeville Creamery Idaho Falls, Idaho Wallace Dairy Jerome, Idaho Ida Gem Dairymen, Inc. Lewis ton, Idaho Golden Grain Dairy Producers, Inc. Date of Milking 4/29 4/30 5/02 5/03 4/26 4/27 4/28 4/29 4/30 4/27 4/27 4/29 5/01 5/02 5/04 5/04 4/26 4/29 5/02 5/10 5/11 5/13 5/17 5/18 4/26 4/27 4/28 4/29 4/30 4/25 4/28 4/29 4/29 5/01 5/02 Time of Day AM AM AM AM AM AM PM PM PM AM PM AM PM PM AM PM PM AM AM AM AM AM AM AM PM AM AM AM AM PM PM AM PM AM AM 131I ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 70 30 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 13 3, ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 137Cs 40 40 55 40 65 70 60 80 55 75 10 75 70 65 70 80 50 30 55 30 35 25 40 15 30 ND 10 25 35 30 ND ND 35 15 45 89C 90_ Sr Sr no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 29 ND 15 ND 20 no chem no chem no chem no chem no chem ND 10 no chem. no chem no chem no chem ND 13 no chem no chem no chem ND 10 no chem no chem no chem no chem no chem no chem no chem 74 ------- Appendix IV. Complete Milk Sampling Data(continued) Location Date of Milking Time of Day pCi/1 131 133T 137 I I Cs 89Q Sr 90C Sr Mt. Home, Idaho Clover Hollow Dairy Pocatello, Idaho Ward's Dairy 4/26 AM ND ND Beaver, Utah G. Robert's Dairy Cedar City, Utah Matheson Dairy Meadow Gold Dairy Garrison, Utah Gonder's Dairy Kanab, Utah J. Johnson Ranch Minersville, Utah Minersville Dairy 35 no chem 4/26 4/27 4/28 4/29 4/30 4/26 4/27 4/26 4/27 4/27 4/29 5/02 5/03 5/03 5/04 5/05 5/06 5/03 5/04 5/05 5/06 4/30 5/01 5/02 4/30 5/01 5/02 5/04 AM AM AM AM AM PM AM PM AM PM PM AM AM PM PM PM PM PM AM AM AM PM AM AM AM PM AM PM ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 40 15 15 50 35 85 45 40 35 10 15 20 10 10 55 25 45 20 40 40 40 45 45 65 25 50 15 25 no chem no chem no chem no chem ND 10 no chem no chem no chem no chem no chem ND 6 no chem no chem no chem no chem ND 8 no chem no chem no chem no chem no chem ND 7 ND 8 ND 10 no chem no chem no chem no chem 75 ------- Appendix IV. Complete Milk Sampling Data (continued) Location Mt. Pleasant, Utah Brooklawn Creamery Ogden, Utah Maple Leaf Dairy Orderville, Utah Chamberlain Ranch Richfield, Utah Ideal Dairy St. George, Utah R. Cox Dairy St. George Ice Co. Salt Lake City, Utah Salt Lake Dairy Pool Date of Milking 4/27 4/28 4/29 5/01 5/02 5/02 5/03 5/04 4/27 4/30 5/03 5/01 5/01 4/29 5/04 4/26 4/29 4/30 5/01 5/03 5/04 5/06 4/30 5/01 5/02 4/25 4/28 4/29 4/29 5/02 5/03 5/07 Time of Day AM AM AM AM AM PM AM AM AM PM PM AM PM PM AM PM PM PM AM AM AM AM AM AM AM PM AM AM PM AM AM PM 131I ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 133i ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 137_ Cs 35 20 20 10 50 40 10 45 70 ND 40 25 10 30 40 30 25 25 25 30 ND 30 ND 20 25 15 45 20 35 50 30 45, 89C 90C Sr Sr no chem no chem no chem no chem ND 17 ND 17 no chem no chem no chem ND 4 no chem no chem ND 5 ND 5 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 10 ND 14 ND 12 no chem no chem no chem no chem 76 ------- Appendix IV. Complete Milk Sampling Data (continued) Location Smithfield, Utah Cache Valley Dairy Products Spanish Fork, Utah Town Pride Dairy Casper, Wyoming Meadow Gold Dairy Cheyenne, Wyoming Dairy Gold Foods Powell, Wyoming Cream of the Valley Dairy Date of Milking 4/26 4/29 5/02 5/03 5/04 4/25 4/27 4/28 4/29 4/30 5/01 5/02 5/04 5/06 4/28 4/28 4/29 4/30 5/02 5/04 5/06 4/25 4/26 4/27 4/28 4/29 5/01 5/02 5/03 4/26 4/26 4/26 4/27 4/27 Time of Day AM AM PM PM PM AM AM AM AM PM AM AM AM AM AM PM AM AM AM AM AM PM PM PM PM PM PM PM PM AM PM PM AM PM 131: ND ND ND ND ND ND ND 60 20 ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 133i ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 137_ Cs 30 40 ND 25 45 ND 40 85 30 30 30 35 45 45 25 ND 10 ND 10 30 35 20 15 25 ND 20 ND 20 20 35 15 50 30 30 89Q 90 Sr Sr no chem no chem ND 17 no chem no chem ND 9 no chem no chem ND 10 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 11 no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem 77 ------- Appendix IV. Complete Milk Sampling Data (continued) Date of Location . Milking Powell, Wyoming Cream of the Valley Dairy (continued) Rawlins, Wyoming Wyoming Dairy Products Riverton, Wyoming Morning Star Dairy Sheridan, Wyoming Jersey Creamery, Inc. 4/27 4/29 4/29 4/30 5/01 5/02 4/26 4/27 4/29 4/30 5/01 5/02 5/03 4/25 4/27 4/29 4/26 4/27 4/27 4/28 4/30 Time of Day PM AM PM PM PM PM PM PM PM PM PM PM PM PM PM PM AM AM AM AM AM 131I ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND 133i ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND ND pCi/1 13?Cs 15 15 20 35 10 ND 30 30 30 ND 25 35 45 ND 30 20 40 45 30 25 15 89C 90 Sr Sr no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem no chem ND 13 no chem no chem no chem no chem no chem no chem no chem no chem ND = Not detected. Minimum detectable levels are: 131 133 137 1-20 pCi/1; 1-20 pCi/1; Cs - 10 pCi/1; 89 90 Sr - 5 pCi/1; Sr - 1 pCi/1. *NA = Data not available. 78 ------- DISTRIBUTION 1-15 WERL, Las Vegas, Nevada 16 Robert E. Miller, Manager, NVOO/AEC, Las Vegas, Nevada 17 Robert H. Thalgott, NVOO/AEC, Las Vegas, Nevada 18 Henry G. Vennillion, NVOO/AEC, Las Vegas, Nevada 19 Chief, NOB/DNA, NVOO/AEC, Las Vegas, Nevada 20 Robert R. Loux, NVOO/AEC, Las Vegas, Nevada 21 Donald W. Hendricks, NVOO/AEC, Las Vegas, Nevada 22 Technical Library, NVOO/AEC, Las Vegas, Nevada 23 Mail & Records, NVOO/AEC, Las Vegas, Nevada 24 Martin B. Biles, DOS, USAEC, Washington, D.C. 25 Director, DMA, USAEC, Washington, D.C. 26 John S. Kelley, DPNE, USAEC, Washington, D.C. 27 Philip Allen, ARL/NOAA, NVOO/AEC, Las Vegas, Nevada 28 Gilbert J. Ferber, ARL/NOAA, Silver Spring, Maryland 29 Stanley M. Greenfield, Assistant Administrator for Research & Monitoring EPA, Washington, D.C. 30 Acting Deputy Assistant Administrator for Radiation Programs, EPA, Rockville, Maryland 31 Paul C. Tompkins, Act. Dir., Div. of Criteria & Standards, Office of Radiation Program, EPA, Rockville, Maryland 32 Ernest D. Harvard, Acting Director, Division of Technology Assessment, Office of Radiation Program, EPA, Rockville, Maryland 33 Bernd Kahn, Chief, Radiochemistry & Nuclear Engineering, NERC, Cincinnati, Ohio 34 - 35 Charles L. Weaver, Acting Director, Division of Surveillance & Inspection, Office of Radiation Programs, EPA, Rockville, Maryland 36 Gordon Everett, Director, Office of Technical Analysis, EPA, Washington, D.C. 37 Regional Administrator, EPA, Region IX, San Francisco, California 38 Eastern Environmental Radiation Laboratory, EPA, Montgomery, Alabama 39 Acting Director, Twinbrook Research Laboratory, EPA, Rockville, Maryland 40 William C. King, LLL, Mercury, Nevada 41 James E. Carothers, LLL, Livermore, California 42 Roger E. Batzel, LLL, Livermore, California 43 William E. Ogle, LASL, Los Alamos, New Mexico 44 Harry S. Jordan, LASL, Los Alamos, New Mexico 45 Arden E. Bicker, REECo, Mercury, Nevada 46 Clinton S. Maupin, REECo, Mercury, Nevada ------- Distribution (cont'd) 47 Charles F. Bild, Sandia Laboratories, Albuquerque, New Mexico 48 Robert H. Wilson, University of Rochester, Rochester, New York 49 Richard S. Davidson, Battelle Memorial Institute, Columbus, Ohio 50 Frank E. Abbott, USAEC, Golden, Colorado 51 John M. Ward, President, Desert Research Institute, University of Nevada, Reno 52 - 53 DTIE, Oak Ridge, Tennessee (for public availability) ------- |